Ideally
来自Big Physics
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late Middle English (as a term in Platonic philosophy, in the sense ‘existing as an archetype’): from late Latin idealis, from Latin idea (see idea).
wiktionary
From ideal + -ly.
etymonline
ideally (adv.)
"in the best conceivable situation," 1840, from ideal + -ly (2). Earlier "in an archetype" (1640s); "in idea or imagination" (1590s).
