形容詞 janus-faced:

1. having or concerned with polarities or contrasts
2. marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another- W.M.Thackeray
   同義詞：ambidextrous, deceitful, double-dealing, duplicitous, two-faced, double-faced, double-tongued
3. having two faces--one looking to the future and one to the past
   同義詞：two-faced

Ja.nus-faced

adj.（形容詞）
Hypocritical.
虛偽的