Vague
来自Big Physics
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mid 16th century: from French, or from Latin vagus ‘wandering, uncertain’.
wiktionary
From Middle French vague, from Latin vagus(“uncertain, vague”, literally “wandering, rambling, strolling”).
etymonline
vague (adj.)
"uncertain as to specifics," 1540s, from French vague "empty, vacant; wild, uncultivated; wandering" (13c.), from Latin vagus "strolling, wandering, rambling," figuratively "vacillating, uncertain," perhaps from PIE *Huog-o- and cognate with Old Norse vakka "to stray, hover," Old High German wankon "to totter, stagger," Old High German winkan "to waver, stagger, wink," Old English wincian "to nod" [de Vaan]. Related: Vagueness.
