infidelity

As a noun infidelity

is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As nouns the difference between treachery and infidelity

is that treachery is deliberate, often calculated, disregard for trust or faith while infidelity is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.

As a noun infidelity

is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.

As an adjective unfaithful is

not having religious faith.

As nouns the difference between infidelity and treason

is that infidelity is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse while treason is the crime of betraying one’s own country.

As nouns the difference between misstep and infidelity

is that misstep is a step that is wrong, a false step while infidelity is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.

As a verb misstep

is to step badly or incorrectly.

As nouns the difference between infidelity and dishonesty

is that infidelity is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse while dishonesty is (uncountable) the characteristic or condition of being dishonest.

As a noun infidelity

is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between infidelity and trend

is that infidelity is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse while trend is trend.

As nouns the difference between infidelity and concubinage

is that infidelity is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse while concubinage is the state of cohabiting or living together as man and wife while not married.

As nouns the difference between disloyalty and infidelity

is that disloyalty is an act of being disloyal; a betrayal while infidelity is unfaithfulness in marriage: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.