Synonyms of screw-up

1 Syllable
slip, goof, gaff
2 Syllables
gaffe, lapse, goof-up, goof-ups, folly, rashness, boners, error, stumble, errors, muddling, boner, miscue, bumble, slip-up, naiveté, foul-up, misspeak
3 Syllables
recklessness, gaucherie, blunderbuss, foolishness, thoughtlessness, crudeness, misjudgment, hastiness, tactlessness
4 Syllables
indiscretions, imprudence, indiscretion, stupidity, indiscreetness, ingenuousness, unseemliness
5 Syllables
simplemindedness, unconnectedness, simple-mindedness
6 Syllables
disorganization, excitability