adulterous
adjective
[ əˈdʌlt(ə)rəs ]
• of or involving adultery.
• "an adulterous affair"
Similar:
unfaithful,
faithless,
disloyal,
untrue,
inconstant,
fickle,
flighty,
unreliable,
untrustworthy,
false,
false-hearted,
deceiving,
deceitful,
treacherous,
traitorous,
extramarital,
cheating,
two-timing,
Origin:
mid 16th century: from the obsolete noun adulter ‘adulterer’ (see adultery) + -ous.
