lassitude(lˈæsət(j)ùːd)「無気力」early 15c., from Latin lassitudinem (
nominative lassitudo) "faintness, weariness," from lassus "faint, tired, weary," from
PIE *led-to-, suffixed form of *led- "slow, weary" (source also of Old English læt "sluggish, slow;" see late (adj.)), from PIE root *lē- "to let go, slacken." 「ラッシー中毒 無気力に。」
名詞不可算名詞
【語源】
ラテン語から