According to Collins Dictionary “double-faced” means ‘deceitful’.

Can both adjectives of the Title box be used interchangeably in the sense of deceit?

  • In the sense of "deceitful" the origin of the term is apt to be bogus coins that had "heads" on both sides. But "two-faced liar" has acquired it's own connotations, mainly of a person who "flips" between different and conflicting versions of his assertions, depending on how he's being challenged. – Hot Licks Apr 8 at 14:37
  • Double-headed eagle—look it up. – Xanne Apr 8 at 23:01

Double-headed (adj):

  1. (of a train) pulled by two locomotives.

Example: Trains were double headed for most of the day with every possible combination of locomotive.

  1. (of a weapon) having two cutting implements, typically one at each end of the shaft.

Example: a double-headed axe. (Lexico)

Double-faced or two-faced (adj): 2. Tending to say one thing and do another; deceitful.

Example: were you double-faced—did you betray them?’


You cannot interchange 'double-headed' and 'double-faced' to mean 'deceitful'. They have different meanings.

You can use 'duplicitous' or 'two-faced' instead of 'double-faced'.

Duplicitous (adj): deceitful. (Lexico)

Two-faced (adj): Insincere and deceitful. (Lexico)

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