English
infidelize
From infidel + -ize.
Formed from infidel + -ize
Proto-Indo-European *bʰeydʰ- ‘to command, to persuade, to trust’
Latin fidēs ‘faith, trust’
Latin fidēlis ‘faithful’
Latin īnfidēlis ‘unfaithful’
Middle French infidèle ‘unfaithful’
English infidel
Today it means
verb To make infidel.
Language periods are conventional ranges, not dates for this word.
Etymograph / infidelize