fly-by-night

Definitions of fly-by-night
1

adj (of businesses and businessmen) unscrupulous

Synonyms:
shady
untrustworthy, untrusty
not worthy of trust or belief

adj ephemeral

“the symphony is no fly-by-night venture”
Synonyms:
impermanent, temporary
not permanent; not lasting

n a debtor who flees to avoid paying

Type of:
debitor, debtor
a person who owes a creditor; someone who has the obligation of paying a debt

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