2) ANTONYM. The Columbia Guide to Standard American English. 1993
...An antonym is a word that means the opposite of another word; thus antonym is the antonym of synonym. The related adjectives are antonymous and antonymic; they occur...

3) antonym. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...A word having a meaning opposite to that of another word: The word wet is an antonym of the word dry. ant(i)- + -onym.anto·nymic -ADJECTIVEan·tony·mous (an-tn-ms)...

4) ant. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
...antonym...

5) temerity, timidity. The Columbia Guide to Standard American English. 1993
...Temerity is reckless, rash boldness, foolish daring, and timidity is an antonym of it, meaning lack of courage, boldness, self-confidence. 1...

6) impractical, impracticable. The Columbia Guide to Standard American English. 1993
...There is some overlap: impractical is the antonym of practical in its sense of feasible : if the scheme is impractical, it s not feasible; an impractical person lacks...

7) background. The Columbia Guide to Standard American English. 1993
...The noun in its literal visual sense as the antonym of foreground is Standard, but some people have objected to its use in the senses of origin, history, training...

8) in-, non-, un- The Columbia Guide to Standard American English. 1993
...These mean the negative of, the opposite of, or the antonym of, as in intolerant, insolvent, non-Christian, nonsmoker, unpleasing, unsavory. In- (sometimes en-) is...

9) How to Use the Book. Mawson, C.O. Sylvester. 1922. Roget s International Thesaurus of English Words and Phrases.
...I. To find a synonym or antonym for any given WORD: Turn to the Index Guide and find the particular word or any term of kindred meaning; then refer to the category...

10) counter. Roget s II: The New Thesaurus, Third Edition. 1995.
...That which is diametrically opposed to another: antipode, antipodes, antithesis, antonym, contrary, converse2, opposite, reverse. Logic : contradictory, contrapositive....