two-timing

two-time (ttm)

tr.v. two-timed, two-tim·ing, two-times Slang

1. To be unfaithful to (a spouse or lover).

2. To deceive; double-cross.

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two-timer n.

Thesaurus

Adj.

1.

two-timing - not faithful to a spouse or lover; "adulterous husbands and wives"; "a two-timing boyfriend" cheating, adulterous unfaithful - having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend; "her husband was unfaithful"