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Dictionary definition for: Unfaithful

1. (a) not true to duty or obligation or promises; "an unfaithful lover"

2. (a) having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend; "her husband was unfaithful"

3. (s) deliberately and abominably disloyal or likely to betray trust or confidence; "the faithless Benedict Arnold" "a lying traitorous insurrectionist"

4. (s) not trustworthy; "an unfaithful reproduction"

WordNet 2.1 Copyright Princeton University. All rights reserved.