| Word | Definitions | Synonyms |
|---|---|---|
| fourth | (adjective) coming next after the third and just before the fifth in position or time or degree or magnitude | Synonyms: 4th, quaternary |
| (noun) the musical interval between one note and another four notes away from it | - | |
| (noun) one of four equal parts | Synonyms: fourth part, one-fourth, one-quarter, quarter, quartern, twenty-five percent | |
| (noun) following the third position; number four in a countable series | - | |
| (adverb) in the fourth place | Synonyms: fourthly |