You searched for: “antonyms
Funk & Wagnalls Standard Handbook of Synonyms, Antonyms, and Prepositions
By James C. Fernald, L.H.D.; Funk & Wagnalls; New York; 1947.
This entry is located in the following unit: Sources of Information; Words in Action (page 1)
Word Entries at Word Info: “antonyms
antonym (s) (noun), antonyms (pl)
1. A word or name that means the opposite of another word or name.
2. Two words that express opposing concepts.

The word wet is an antonym of the word dry and cold is an antonym of hot.

English also uses prefixes to indicate antonyms; such as, cacophony (bad, loud, harsh sounds) and euphony (good, harmonious, pleasant sounds). This process also functions in other languages.

This entry is located in the following unit: -onym, -onymy, -onymic, -onymically, -onymous, -onymously, -nym (page 2)
(contronyms or words which have definitions that are self-antonyms; that is, which have two meanings that are the opposites of each other)