PREFIX AND SUFFIX
Tamil Nadu Samacheer Kalvi – Exam-Focused Courseware | Learners aged 11 years and above
முன்னொட்டு – Prefixபின்னொட்டு – Suffix12th Standard One-Mark FocusENGWIN.NET • Learn the word-building skill, understand the Tamil meaning, and answer examination questions confidently.
🎯 Course Purpose
This course teaches students how prefixes and suffixes are used to form new words. It is designed around the style of Tamil Nadu Samacheer Kalvi vocabulary questions and includes practice based on published 12th Standard material.
தமிழில்: ஒரு சொல்லின் முன்பகுதியில் சேர்க்கப்படும் சொல் பகுதி Prefix (முன்னொட்டு). ஒரு சொல்லின் இறுதியில் சேர்க்கப்படும் சொல் பகுதி Suffix (பின்னொட்டு). இவை சொல்லின் பொருளையோ சொல்லின் வகையையோ மாற்ற உதவும்.
Exam alert: 12th Standard preparation commonly asks students to form a new word by adding a suitable prefix or suffix to a given root word. Published Samacheer-focused material includes examples such as bisector, co-author, recount, weightage, hyphenate, privatize and containment. citeturn0search1turn0search7
📚 Learning Outcomes
1. Identify the root/base word.
2. Distinguish a prefix from a suffix.
3. Understand common meanings of prefixes.
4. Use common suffixes to build words.
5. Handle one-mark exam questions.
6. Use Tamil meaning as a support, not as a substitute for English usage.
🗺️ Course Roadmap
- Affixes and root words
- Prefixes
- Common prefixes and meanings
- Prefix spelling and hyphen use
- Suffixes
- Common suffixes and meanings
- Suffixes and parts of speech
- Spelling changes while adding suffixes
- 12th Standard exam pattern
- Previous-year-style practice
- Common errors
- Final mastery test
Lesson 1 – Affix, Root Word and New Word
An affix is a word part added to a root/base word. A root or base gives the central meaning.
| Word | Parts | Meaning |
|---|---|---|
| unhappy | un + happy | not happy |
| teacher | teach + er | a person who teaches |
| kindness | kind + ness | the quality of being kind |
தமிழ் உதவி: Root/Base Word = அடிச்சொல் / மூலச்சொல்; Affix = ஒட்டுச்சொல்; New Word = புதிய சொல்.
Lesson 2 – What Is a Prefix?
A prefix is added to the front of a word to form a new word or change its meaning. Prefixes may sometimes be hyphenated, especially in certain compounds and titles.
| Prefix | Example | Simple meaning |
|---|---|---|
| un- | unhappy | not |
| re- | rewrite | again |
| co- | co-author | together / jointly |
| bi- | bisector | two |
| over- | overlook | above / too much / fail to notice, depending on word |
| en- | encircle | put into / cause to be |
நினைவில் கொள்: Prefix முன்புறத்தில் வரும். un + happy = unhappy. re + write = rewrite.
Lesson 3 – High-Value Prefixes for Exams
| Prefix | Idea | Examples | Tamil clue |
|---|---|---|---|
| un- | not / opposite | unfair, unhappy | இல்லை / எதிர்மறை |
| in-/im-/il-/ir- | not | inactive, impossible, illegal, irregular | இல்லை |
| re- | again | rewrite, recount | மீண்டும் |
| co- | together | co-author, coexist | இணைந்து |
| bi- | two | bisector, bicycle | இரண்டு |
| over- | too much / above | overlook, overwork | அதிகமாக / மேலாக |
| en- | make / put in | encircle, enrich | ஆக்குதல் / உள்ளாக்குதல் |
Do not guess from Tamil translation alone. A prefix can have different effects in different words. Always check whether the resulting English word is an accepted word.
Lesson 4 – Prefix Formation: Samacheer-Style Practice
Study the question pattern: Form a new word by adding a suitable prefix to the root word.
- sector → bi + sector = bisector
- author → co + author = co-author
- count → re + count = recount
- existence → co + existence = coexistence
- look → over + look = overlook
- circle → en + circle = encircle
These examples reflect the prefix exercise pattern reported in Samacheer-focused 12th Standard materials. citeturn0search1turn0search10
Lesson 5 – What Is a Suffix?
A suffix is added to the end of a word. It may change the meaning, grammatical function, or word class.
| Suffix | Example | Result |
|---|---|---|
| -er | teach + er | teacher – person who teaches |
| -ness | kind + ness | kindness – quality |
| -ful | care + ful | careful – adjective |
| -less | care + less | careless – adjective |
| -ment | contain + ment | containment – noun |
| -ic | atom + ic | atomic – adjective |
தமிழ் உதவி: Suffix என்பது சொல்லின் பின்னால் சேர்க்கப்படும் பகுதி. kind + ness = kindness → “kind” என்ற பண்பின் நிலை/தன்மை.
Lesson 6 – High-Value Suffixes
| Suffix | Typical use | Examples |
|---|---|---|
| -er | person/doer | teacher, worker |
| -ness | quality/state | kindness, darkness |
| -ful | full of | helpful, playful |
| -less | without | careless, helpless |
| -ment | action/result/state | development, containment |
| -able | capable of / can be | readable, washable |
| -al | related to | natural, musical |
| -ic | related to | poetic, scientific |
| -ate | form a verb in some words | hyphenate |
| -ize | make/become in some words | privatize |
| -ity | state/quality | nobility, ability |
Lesson 7 – Samacheer-Style Suffix Formation
Published 12th Standard Samacheer-focused materials give examples such as:
| Root | Suffix | New word | Meaning support |
|---|---|---|---|
| weight | -age | weightage | importance/allocated value in a context |
| hyphen | -ate | hyphenate | to join/mark with a hyphen |
| private | -ize | privatize | make private |
| contain | -ment | containment | the act/state of containing |
| wilder | -ness | wilderness | wild, uncultivated region |
These are directly represented in published Samacheer Kalvi 12th English Prefix/Suffix practice material. citeturn0search1turn0search7
Lesson 8 – Suffixes and Word Class
Noun: kind → kindness; develop → development; music → musician
Adjective: care → careful; danger → dangerous; nature → natural
Verb: private → privatize; hyphen → hyphenate
Person noun: teach → teacher; work → worker
தமிழில்: பின்னொட்டு சேர்க்கும்போது சொல்லின் இலக்கண வகையும் மாறலாம். எனவே “எந்த புதிய சொல் தேவை?” என்பதைப் பார்த்து suffix தேர்வு செய்ய வேண்டும்.
Lesson 9 – Spelling Changes
Adding a suffix sometimes changes spelling. Learn the word as a whole rather than applying a single mechanical rule to every word.
| Base | New word | What to notice |
|---|---|---|
| happy | happiness | y changes to i before -ness |
| beauty | beautiful | the spelling pattern changes |
| music | musician | word form changes |
| noble | nobility | spelling changes in the derived form |
Exam tip: Do not create a word merely because the letters can be joined. The complete derived word must be a valid English word.
Lesson 10 – Previous-Year Question Paper Strategy
Tamil Nadu 12th English previous-year papers are useful for recognising recurring question formats and practising speed. Available collections include public papers from multiple years, while current resources also publish recent papers. citeturn0search2turn0search3turn0search4
4-step method:
- Underline the root word.
- Read every option carefully.
- Build the complete word mentally.
- Check meaning and spelling before choosing.
Mini PYQ-Style Drill
- Form a new word with a suitable prefix: count → (a) uncount (b) recount (c) cocount (d) bicount
- Form a new word with a suitable suffix: contain → (a) containment (b) containful (c) containless (d) container
- Form a new word with a suitable prefix: author → (a) reauthor (b) co-author (c) biauthor (d) unauthor
- Form a new word with a suitable suffix: danger → (a) dangerful (b) dangerless (c) dangerous (d) dangerment
Reveal answers
1. recount • 2. containment • 3. co-author • 4. dangerous
Lesson 11 – Common Errors
| Wrong approach | Better approach |
|---|---|
| Choosing a prefix because its Tamil meaning “sounds right” | Check the complete English word. |
| Adding any suffix to any root | Use a suffix that forms an accepted word. |
| Ignoring spelling changes | Learn common derived forms. |
| Confusing prefix with suffix | Prefix = front; suffix = back. |
| Forgetting hyphenation in familiar compounds | Learn common forms such as co-author. |
Lesson 12 – Grammar & Vocabulary Detective Challenge
Read the sentence and identify the root and the affix in the highlighted word.
- Priya showed great kindness to the new student.
- Arun had to rewrite the answer.
- Meena was a careful worker.
- Karthik studied the scientific report.
- Varshini prepared a beautiful chart.
Reveal analysis
- kindness = kind + -ness
- rewrite = re- + write
- worker = work + -er
- scientific = science + -ific (derived form)
- beautiful = beauty + -ful (with spelling change in the derived form)
📝 20 One-Mark MCQs
- A prefix is added to the ____ of a word. (a) beginning (b) middle (c) end (d) sentence
- A suffix is added to the ____ of a word. (a) front (b) end (c) title (d) paragraph
- Which word contains a prefix? (a) kindness (b) rewrite (c) teacher (d) careful
- Which is correct? (a) re-count (b) recount (c) recounting only (d) countrere
- sector + suitable prefix = (a) bisector (b) unsector (c) sectorful (d) sectorless
- author + suitable prefix = (a) co-author (b) biauthor (c) authorless (d) authorment
- weight + suitable suffix = (a) weightage (b) weightness (c) weightful (d) weightic
- hyphen + suitable suffix = (a) hyphenate (b) hyphenness (c) hyphenful (d) hyphenity
- private + suitable suffix = (a) privatize (b) privateness only (c) privateful (d) privateer
- contain + suitable suffix = (a) containment (b) containize (c) containic (d) container
- Which suffix means “without” in common formations? (a) -ful (b) -less (c) -er (d) -ment
- Which suffix commonly forms a person noun? (a) -er (b) -ness (c) -ity (d) -ic
- Which word means “not happy”? (a) rehappy (b) unhappy (c) cohappy (d) happyless
- Which prefix commonly means “again”? (a) re- (b) bi- (c) co- (d) un-
- Which prefix appears in coexistence? (a) co- (b) re- (c) bi- (d) en-
- Which is a noun? (a) kindness (b) careful (c) privatize (d) dangerous
- Which is an adjective? (a) kindness (b) careful (c) development (d) teacher
- Which is formed with -ment? (a) containment (b) beautiful (c) musician (d) worker
- Which is formed with -ness? (a) kindness (b) teacher (c) rewrite (d) privatize
- Best exam strategy: (a) choose the longest option (b) guess from Tamil only (c) check the complete word, meaning and spelling (d) ignore the root
Answer Key
1-a, 2-b, 3-b, 4-b, 5-a, 6-a, 7-a, 8-a, 9-a, 10-a, 11-b, 12-a, 13-b, 14-a, 15-a, 16-a, 17-b, 18-a, 19-a, 20-c.
📌 One-Page Revision Chart
| Term | Remember | Example |
|---|---|---|
| Prefix | comes before the base | re + write |
| Suffix | comes after the base | kind + ness |
| un- | not | unhappy |
| re- | again | rewrite |
| co- | together | co-author |
| bi- | two | bisector |
| -er | person/doer | teacher |
| -ness | quality/state | kindness |
| -ful | full of | helpful |
| -less | without | careless |
| -ment | state/action/result | containment |
| -ity | state/quality | nobility |
🏆 Final Mastery Check
Try without looking back. Write the new word.
- sector + bi = __________
- author + co = __________
- count + re = __________
- weight + age = __________
- hyphen + ate = __________
- private + ize = __________
- contain + ment = __________
- wilder + ness = __________
- kind + ness = __________
- care + ful = __________
Reveal answers
1. bisector • 2. co-author • 3. recount • 4. weightage • 5. hyphenate • 6. privatize • 7. containment • 8. wilderness • 9. kindness • 10. careful
Self-Check
9–10: Excellent – Exam Ready 7–8: Good – Revise the word list 5–6: Fair – Practise Lessons 2–8 again 0–4: Start with Lessons 1–6 and practise daily👩🏫 Teacher Assessment Rubric
| Skill | Excellent | Needs Practice |
|---|---|---|
| Identifies prefix/suffix | Consistent | Confuses position |
| Forms new words | Accurate spelling and meaning | Frequent spelling/word-choice errors |
| Exam response | Fast and accurate | Needs more timed drills |
| Tamil-to-English support | Uses Tamil meaning to confirm understanding | Depends only on translation |
🎲 Classroom Activities
Prefix Relay: Ravi says a root; Priya adds a suitable prefix; the class checks the new word.
Suffix Chain: Arun starts with a root; each learner adds a valid suffix-derived word.
Word Detective: Meena finds prefixes and suffixes in a newspaper or textbook paragraph.
One-Minute Challenge: Karthik solves ten prefix/suffix items in sixty seconds, then checks spelling.
🔑 Master Strategy
SEE THE ROOT → IDENTIFY FRONT/BACK → CHOOSE THE AFFIX → BUILD THE COMPLETE WORD → CHECK MEANING → CHECK SPELLING → ANSWER
தமிழில் நினைவுக்குறிப்பு: அடிச்சொல்லைக் காண் → முன்/பின் பகுதியை அறி → பொருத்தமான Prefix/Suffix தேர்வு செய் → முழுச் சொல்லை உருவாக்கு → பொருள் சரிபார் → spelling சரிபார் → விடை எழுது.