A person who canoodles; someone who engages in cuddling, kissing, or intimate affectionate behavior.
Agent noun formed from 'canoodle' plus '-er' (one who does). The suffix '-er' creates agent nouns productively in English—anyone who does something becomes a 'doer' of that thing.
English speakers immediately recognize that a 'canoodler' is 'one who canoodles'—the '-er' suffix is so productive that we can apply it to brand-new verbs and everyone understands it, making our language incredibly flexible for creating new roles and identities.
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