athletic (adj.)youdaoicibaDictYouDict[athletic 词源字典]
1630s (athletical is from 1590s), "pertaining to an athlete," from Latin athleticus, from Greek athletikos, from athletes (see athlete). Meaning "strong of body; vigorous; lusty; robust" [Johnson, who spells it athletick] is from 1650s.[athletic etymology, athletic origin, 英语词源]