Synonyms for Amiss (same or very similar meaning)
WordNet sense 1 (not functioning properly):
awry, haywire, wrong
WordNet sense 2 (not performing or able to perform its regular function):
nonfunctional, malfunctioning
WordNet sense 3 (in an imperfect or faulty way):
imperfectly
From the ODE community, based on WordNet
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