Synonyms of fly-by-night in English:

fly-by-night


See definition of fly-by-night

adjective

1‘sometimes these fly-by-night contractors take off without paying us at all’

SYNONYMS

unreliable, undependable, irresponsible, untrustworthy

dishonest, deceitful, not to be trusted, dubious, double-dealing, treacherous, traitorous, two-faced, unfaithful, duplicitous, dishonourable, unprincipled, unscrupulous, corrupt, underhand

informal iffy, shady, shifty, slippery, crooked

British informal dodgy, bent

NZ Australian informal shonky

ANTONYMS

reputable