Antonym (noun)

A word of opposite meaning to another word.

Origin:

Late 17th century: from greek ant- 'opposite' + onuma 'name'.

Examples:

1. The antonym of 'hot' is 'cold'.
2. Antonyms are a useful tool for building vocabulary and testing word knowledge.
3. Some common antonyms include 'big' and 'small', 'up' and 'down', and 'fast' and 'slow'.
4. It can sometimes be difficult to find the perfect antonym for a word, as many words have multiple possible antonyms.
5. The use of antonyms can be helpful in understanding the meaning of new or unfamiliar words, as the meaning of a word can often be inferred from its antonym.