Janus-faced (adjective)
definition:
having two faces--one looking to the future and one to the past
Synonyms
Two-facedJanus-faced (adjective)
definition:
marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
Janus-faced (adjective)
definition:
having or concerned with polarities or contrasts
example:
"a Janus-faced view of history"