  We have studied concerning the formation of derivatives by the addition of suffixes. Derivatives are also formed by the addition of prefixes. You remember that a prefix is a syllable which is placed before a simple word to form the derivative. Among the most common of these prefixes are in, un and mis. The prefix in used with an adjective or adverb means not; for example, insane means not sane; incorrect means not correct, etc. The prefix in used with a noun means lack of; for example, inexperience means lack of experience; inability means lack of ability, etc. In words beginning with m or p, in, meaning not or lack of, is changed to im. This is done for the sake of euphony. The n does not unite readily with the sound of m or p. So we do not say inmodest and inpartial, but immodest and impartial. The prefix un, used with participles, means not; for example, unprepared means not prepared; unguarded means not guarded, etc. The prefix un used with verbs, means to take off or to reverse; for example, uncover means to take off the cover; untwist means to reverse the process of the twisting. The prefix un used with adjectives means not; for example, uncertain means not certain; uncommon means not common. The prefix mis used with nouns or verbs, means wrong. For example, mistreatment means wrong treatment; to misspell means to spell wrong. Add the prefix in to the nouns given in Monday's list; add the prefix in to the adjectives given in Tuesday's list; add the prefix im to the adjectives and nouns in Wednesday's lesson; add the prefix un to the participles and adjectives in Thursday's lesson; add the prefix un to the verbs in Friday's lesson, and add the prefix mis to the nouns and verbs in Saturday's lesson. Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
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