出典:Wiktionary
From Middle English elning, elnung, from 古期英語 ellnung, elnung (“encouragement, comfort, consolation, emulation, hot emulation, zeal, envy”), from elnian (“to emulate, endeavor to be equal, be zealous, strive with zeal after another, make strong, strengthen, comfort oneself, gain strength”) (compare 古期英語 ellen (“zeal, strength, power, vigor, valor, courage, fortitude, strife, contention”)), equivalent to elne + -ing. Cognate with Scots eldning (“jealousy”).