FLAT Synonyms: 565 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com:443/thesaurus/flat
WEBSynonyms for FLAT: exact, round, precise, even, boring, slow, tiring, dull; Antonyms of FLAT: relative, near, comparative, approximate, imprecise, interesting, involving, spectacular
DA: 98 PA: 80 MOZ Rank: 91 Up or Down: Up