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sail under false colors
Language:
en
1.
Worldwide
historical
formal
To fly a flag other than one's own nation or authority while at sea in order to deceive others about one's identity or intentions.
2.
US
UK
Worldwide
idiomatic
figurative
To present a false appearance or claim a deceptive allegiance in order to mislead others about one's motives, identity, or objectives.
Examples:
No examples available.
Validation Count:
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Sourced from Wiktionary