Main Entry: over·whelm

Pronunciation: \ˌō-vər-ˈhwelm, -ˈwelm\

Function: transitive verb

Etymology: Middle English, from ¹over + whelmen to turn over, cover up

Date: 14th century

1 : upset, overthrow
2 a : to cover over completely : submerge b : to overcome by superior force or numbers c : to overpower in thought or feeling