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What is Word Formation by Affixation?

Word formation through affixation is how languages create new words by attaching prefixes and suffixes to root words, allowing speakers to expand vocabulary without inventing entirely new terms.

Short answer

Affixation is the process of adding morphemes—prefixes (before) and suffixes (after)—to root words to form new words and change meanings, as in unhappy, darkness, and quickly.

Word Formation by Affixation
  1. 1
    Root word
    Base form (happy, dark, quick)
  2. 2
    Prefix (optional)
    un-, re-, dis-, pre- placed before
  3. 3
    Suffix (optional)
    -ness, -ment, -ly, -ing placed after
  4. 4
    New word
    unhappy, darkness, quickly, remaking
01

Step-by-step worked examples

Add a prefix to 'happy' to make it negative.

Root: happy
Prefix un- means not
Result: unhappy (not happy)

Add a suffix to 'dark' to make it a noun.

Root: dark
Suffix -ness creates nouns from adjectives
Result: darkness (state of being dark)

Add a suffix to 'quick' to make it an adverb.

Root: quick
Suffix -ly creates adverbs
Result: quickly (in a quick manner)
02

Flashcards

03

Quick quiz

Q1.Which is the prefix in 'unhappy'?

Correct answer: B. un- is the prefix added before the root 'happy'.

Q2.What does the suffix -ness do?

Correct answer: C. -ness transforms adjectives into abstract nouns (dark → darkness).

Q3.Identify the suffix in 'slowly'.

Correct answer: A. -ly is the adverb suffix added to 'slow'.

Q4.Which word has both a prefix and suffix?

Correct answer: C. unhappiness = un- (prefix) + happy (root) + -ness (suffix).
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04

Common mistakes

Thinking prefixes and suffixes are the same.Correct: Prefixes attach before roots; suffixes attach after.

Confusing root words with morphemes.Correct: A root is a standalone word; a morpheme is any meaningful unit.

Believing all word formation uses affixation.Correct: Other methods exist: compounding, blending, and borrowing.

Assuming any prefix/suffix combination makes a valid word.Correct: Some combinations violate language rules and don't produce real words.

05

FAQ

What is word formation by affixation?

It's the process of adding prefixes and suffixes to root words to create new words with different meanings and grammatical functions.

What is the difference between a prefix and a suffix?

A prefix attaches to the beginning of a root (un-happy), while a suffix attaches to the end (dark-ness).

How many prefixes and suffixes exist in English?

Hundreds; common ones include un-, re-, dis-, -ness, -ment, -ing, -ly, and -tion.

Can a word have multiple affixes?

Yes — unhappiness has un- (prefix) and -ness (suffix), both attached to 'happy'.

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