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You are here: Level B1 > Prefixes - opposite meaning

Grammar

Prefixes




These prefixes give a word an opposite meaning:


de – often used with verbs

Examples:

Activate – deactivate

Appreciate – depreciate

Promote – demote



dis – used with adjectives, nouns, verbs

Examples:

Arm – disarm

Appear – disappear

Organized – disorganized

Order (noun) – disorder

Regard - disregard



il – used with adjectives starting with l

Examples:

Legal – illegal

Legitimate – illegitimate



im – used with adjectives starting with p, m

Examples:

Possible – impossible

Partial – impartial

Mortal – immortal



in – used with adjectives, often starting with e, c

Examples:

Effective – ineffective

Edible – inedible

Competent – incompetent

Complete – incomplete



ir – used with adjectives, often starting with r

Examples:

Regular – irregular

Replaceable – irreplaceable



un – used with adjectives and verbs

Examples:

Dress – undress (verb)

Tidy – untidy

Expected – unexpected

Wise – unwise

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