Etymology
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Lolita 
fem. proper name, diminutive of Lola (thus a double diminutive). Title and character name in the 1958 novel by Vladimir Nabokov (1899-1977) "about a precocious schoolgirl seduced by a middle-aged man" [OED]; hence figurative use (by 1960) "to designate people and situations resembling those in the book."
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nymphette (n.)

also nymphet, nymphete, "sexually attractive young girl," 1955, introduced by Vladimir Nabokov (1899-1977) in his novel "Lolita" to describe an alluring (in the minds of some men) girl age 9 to 14; from nymph + diminutive suffix. Nymphet was used from 17c. in sense "a little nymph," but this was poetic only by late 19c.

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