love (n.)youdaoicibaDictYouDict[love 词源字典]
Old English lufu "love, affection, friendliness," from Proto-Germanic *lubo (cognates: Old High German liubi "joy," German Liebe "love;" Old Norse, Old Frisian, Dutch lof; German Lob "praise;" Old Saxon liof, Old Frisian liaf, Dutch lief, Old High German liob, German lieb, Gothic liufs "dear, beloved").

The Germanic words are from PIE *leubh- "to care, desire, love" (cognates: Latin lubet, later libet "pleases;" Sanskrit lubhyati "desires;" Old Church Slavonic l'ubu "dear, beloved;" Lithuanian liaupse "song of praise").
"Even now," she thought, "almost no one remembers Esteban and Pepita but myself. Camilla alone remembers her Uncle Pio and her son; this woman, her mother. But soon we shall die and all memory of those five will have left the earth, and we ourselves shall be loved for a while and forgotten. But the love will have been enough; all those impulses of love return the love that made them. Even memory is not necessary for love. There is a land of the living and a land of the dead and the bridge is love, the only survival, the only meaning." [Thornton Wilder, "Bridge of San Luis Rey," 1927]
Meaning "a beloved person" is from early 13c. The sense "no score" (in tennis, etc.) is 1742, from the notion of "playing for love," i.e. "for nothing" (1670s). Phrase for love or money "for anything" is attested from 1580s. Love seat is from 1904. Love-letter is attested from mid-13c.; love-song from early 14c. To fall in love is attested from early 15c. To be in love with (someone) is from c. 1500. To make love is from 1570s in the sense "pay amorous attention to;" as a euphemism for "have sex," it is attested from c. 1950. Love life "one's collective amorous activities" is from 1919, originally a term in psychological jargon. Love affair is from 1590s. The phrase no love lost (between two people) is ambiguous and was used 17c. in reference to two who love each other well (c. 1640) as well as two who have no love for each other (1620s).[love etymology, love origin, 英语词源]
philander (v.)youdaoicibaDictYouDict
1737, from the noun meaning "a lover" (1700), from Philander, popular name for a lover in stories, drama, and poetry, from Greek adjective philandros "with love for people," perhaps mistaken as meaning "a loving man," from phil- "loving" (see philo-) + andr-, stem of aner "man" (see anthropo-). Related: Philandered; philandering.
puppet (n.)youdaoicibaDictYouDict
"doll moved by strings or wires" (later applied to puppets in glove form), 1530s, later form of Middle English popet "doll" (c. 1300; see poppet), from Old French popette "little doll, puppet," diminutive of popee "doll, puppet" (13c., Modern French poupée), from Vulgar Latin *puppa, from Latin pupa "girl; doll" (see pupil (n.1)).

Metaphoric extension to "one whose actions are manipulated by another" first recorded 1540s (as poppet). Puppet show attested from 1650s, earlier puppet-play (1550s). Puppet government is attested from 1884 (in reference to Egypt).