Synonyms and Antonyms of fell flat
to be unsuccessful
- Her performance fell flat despite weeks of rehearsing.
bombed, collapsed, cratered, failed, flamed out, flopped, flunked, folded, foundered, missed, struck out, tanked, washed out
declined, sank (or sunk), skidded, slipped, slumped, waned
crashed, crumbled, miscarried, misfired
to go wrong
- Their game plan fell flat when their star player suffered an injury.
broke down, busted (also bust), conked (out), crashed, died, failed, foundered, stalled
bombed, fizzled, flamed out, flopped, flunked, folded, washed out
declined, skidded, slipped, slumped, tanked, waned