janus-faced
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(s) having or concerned with polarities or contrasts
- a Janus-faced view of history
- a Janus-faced policy
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(s) marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
- "she was a deceitful scheming little thing"- Israel Zangwill
- a double-dealing double agent
- "a double-faced infernal traitor and schemer"- W.M.Thackeray
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(s) having two faces--one looking to the future and one to the past
- Janus the two-faced god