English • Vocabulary

Word Roots - Latin Prefixes

basic Level

Formula

Common prefixes: un-, re-, pre-, dis-, mis-, over-, under-, de-, in-

Explanation

Understanding prefixes helps decode unknown words.

Example

Un+happy=unhappy, Re+do=redo, Pre+view=preview, Dis+agree=disagree

Quick Trick & Mnemonic

MNEMONIC: 'Prefix changes meaning at start' - Un/in = not, Re = again, Pre = before, Mis = wrong

Singular subject + singular verb. Plural subject + plural verb.

Grammar

Simple: base action. Continuous: -ing form. Perfect: have/has/had + past participle

Vocabulary

Synonyms = similar meaning. Antonyms = opposite meaning.