Meaning

verb cause to become sober

verb become more realistic

verb become sober after excessive alcohol consumption

originInherited from Middle English sober, from Old French sobre, from Latin sōbrius, from se- (“without”) + ebrius (“intoxicated”), from Proto-Indo-European *h₁egʷʰ- (“drink”). In the sense "not drunk," displaced native undrunken, from Old English undruncen.

Etymology from Wiktionary, CC BY-SA 3.0