Serving to awaken, arouse, or excite; producing wakefulness or mental stimulation.
From Latin 'expergefacere' (to awaken thoroughly), combining 'ex-' (thoroughly) + 'pergere' (to rouse) + 'facere' (to make). This is a rare medical or pharmaceutical term from classical Latin terminology.
Medical texts use 'expergefacient' to describe substances that wake you up or sharpen your mind—think of it as the medical-Latin version of 'stimulating.' It's the kind of word you'd find in old pharmacy manuals describing coffee or smelling salts.
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