Dictionary

1. (

• unfaithful

) not true to duty or obligation or promises; "an unfaithful lover" ;

2. (

• unfaithful ,

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

3. (

• faithless ,
• traitorous ,
• unfaithful ,
• treasonable ,
• treasonous

) having the character of, or characteristic of, a traitor; "the faithless Benedict Arnold"; "a lying traitorous insurrectionist" ;

4. (

• unfaithful

) not trustworthy; "an unfaithful reproduction" ;