*kā-, Proto-Indo-European root meaning "to like, desire."
It forms all or part of: caress; charity; cherish; Kama Sutra; whore; whoredom.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit Kama, name of the Hindu god of love, kamah "love, desire;" Old Persian kama "desire;" Latin carus "dear;" Old Irish cara "friend;" Old English hore "prostitute, harlot."