Questions about two or more expressions with opposite meaning.
Normally the term "antonym" is understood as "opposite". Wikipedia offers a stricter definition:
Graded (or gradable) antonyms are word pairs whose meanings are opposite and which lie on a continuous spectrum (hot, cold).
Here it's not necessary to follow this stricter definition (though it's good to know it!). You can use this tag for questions about antonyms:
- finding an antonym of a certain word or expression
- asking whether two words or expressions are actually antonyms of each other
- other questions that touch upon words with opposite meanings
To help others understand what kind of answer you expect, it might be useful to specify whether you are looking for an antonym in its stricter meaning (opposite on the same spectrum), or simply a word with opposite meaning.
If your question is about words with similar meaning, use synonyms instead.
If your question is about generic differences in usage or meaning, it might be better to use difference too or instead.