origin of ‘fly-by-night’ (unreliable or untrustworthy)

  Linda maestra! (Pretty teacher! – published in 1799) – by Francisco José de Goya y Lucientes (1746-1828)     The noun fly-by-night, or fly-by-nighter, denotes an unreliable or untrustworthy person. As an adjective, fly-by-night means unreliable or untrustworthy, especially in business or financial matters. However, the term seems to go back to the idea […]

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