verb/bosteˈθaɾ/
to yawn
Etymology tree Proto-Indo-European *h₁óh₃s Proto-Italic *ōs Latin ōs Proto-Indo-European *keyh₂-der. Latin cieō Proto-Indo-European *-tós Proto-Italic *-tos Latin -tus Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Indo-European *-h₂tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Latin -tō Latin citō Latin ōscitō ▲ Old Spanish bocainflu. Old Spanish bostezar Spanish bostezar Inherited from Old Spanish bostezar, from Latin