Origin: 1300–50; Middle English slendre, sclendre < ?
Related forms
slen·der·ly, adverb
slen·der·ness, noun
un·slen·der, adjective
Synonyms 2.Slender,slight,slim imply a tendency toward thinness. As applied to the human body, slender implies a generally attractive and pleasing thinness: slender hands. Slight often adds the idea of frailness to that of thinness: a slight, almost fragile, figure. Slim implies a lithe or delicate thinness: a slim and athletic figure. 4. trivial, trifling. 5. fragile, feeble, fine, delicate, flimsy.
c.1300, probably from a Fr. source, often said to be from O.Fr. esclendre "thin, slender," which could be from O.Du. slinder, but the connections, and even the existence of these words, is doubtful. Slenderize "get slender" is from 1923.