英语词汇invalidity的起源、历史背景-英语词源词典

词汇	invalidity
词源	invalidity n. "want of energy, force, or efficiency," 1540s, from French invalidité (16c.) or directly from Medieval Latin invaliditas "weakness, infirmity," from Latin invalidus "not strong, weak, feeble" (see invalid (adj.1)). Entries linking to invalidity invalid adj.1 "not strong, infirm," also "infirm from sickness, disease, or injury", 1640s, from Latin invalidus "not strong, infirm, impotent, feeble, inadequate," from in- "not" (see in- (1)) + validus "strong" (from PIE root *wal- "to be strong"). With pronunciation from French invalide (16c.). updated on December 07, 2020
随便看	doublethink doubloon doubly doubt doubtful doubtless douche douchebag dough doughboy doughface doughnut doughty doughy douglas doula dour douse dove dovecote dover dovetail dovish dowager dowdy

英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。

invalidity n.