unfaithfully

un·faith·ful

U0070000 (ŭn-fāth′fəl)adj.1. a. Not adhering to promises, obligations, or allegiances; disloyal. See Synonyms at faithless.b. Breaking trust in a marriage or relationship by having sexual relations with someone other than one's spouse or sexual partner.2. Not justly representing or reflecting the facts or a primary source; inaccurate: an account that was unfaithful to what really happened; a translation that was unfaithful to the original.

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un·faith′ful·ly adv.un·faith′ful·ness n.

Thesaurus

Adv.

1.

unfaithfully - in an unfaithful undependable unreliable mannerundependably, unreliablydependably, faithfully, reliably - in a faithful manner; "it always came on, faithfully, like the radio"