janus

/ˈdʒeɪnəs/
noun
  1. An ancient Roman god of doorways, gates, and transitions, often depicted with two faces looking in opposite directions.
    • In Roman mythology, Janus is the god who watches over beginnings and endings.
    • The month of January is named after Janus, the god of doorways.
    • The temple of Janus in Rome had its doors closed only during times of peace.
  2. A person or thing that has two contrasting aspects or faces, especially one that is deceptive or two-faced.
    • The company acted like a Janus, presenting a green image while polluting the river.
    • The politician was a Janus, promising peace while secretly preparing for war.
    • Her personality was a Janus: kind to friends but ruthless in business.
Synonyms
What does "janus" mean? | whatsthatwordmean | whatsthatwordmean