A "thesaurus" is a book of synonyms. It shows words of the same or similar meaning as the word selected. Most types of thesaurus will also show antonyms, which are words with meanings that are the...
It's for finding synonyms and antonyms of a word.
Offers synonyms and antonyms.
3 letters: Pro + found = Profound which means showinh deep insight or understanding.
The best thesaurus is the oxford one