Janus-faced

[ jey-nuh s-feyst ]
/ ˈdʒeɪ nəsˌfeɪst /

adjective

having two faces, one looking forward, one looking backward, as the Roman deity Janus.
having two contrasting aspects, as the alternation of mood in a capricious person.
two-faced; deceitful.
aware of or concerned with polarities; seeing different and contrasting aspects: a Janus-faced view of history.
having or containing contrasting characteristics: a Janus-faced policy.

Origin of Janus-faced

First recorded in 1675–85

British Dictionary definitions for janus-faced

Janus-faced

adjective

two-faced; hypocritical; deceitful