Synonyms and Antonyms for thirty-first
1. first (adj.)
preceding all others in time or space or degree
3. first (adv.)
before anything else
4. first (adv.)
the initial time
6. first (adv.)
before another in time, space, or importance
7. first (n.)
the first or highest in an ordering or series
8. first (n.)
the first element in a countable series
