Soak
Old English socian ‘become saturated with a liquid by immersion’; related to sūcan ‘to suck’.
wiktionary
From Middle English soken, from Old English socian(“to soak, steep”, literally “to cause to suck (up)”), from Proto-Germanic *sukōną(“to soak”), causative of Proto-Germanic *sūkaną(“to suck”). Cognate with Middle Dutch soken(“to cause to suck”). More at suck.
etymonline
soak (v.)
Old English socian (intransitive) "to soak, to lie in liquid," from Proto-Germanic *sukon (source also of West Flemish soken), possibly from PIE *sug-, from root *seue- (2) "to take liquid" (see sup (v.2)). Transitive sense "drench, permeate thoroughly" is from mid-14c.; that of "cause to lie in liquid" is from early 15c. Meaning "take up by absorption" is from 1550s. Slang meaning "to overcharge" first recorded 1895. Related: Soaked; soaking. As a noun, mid-15c., from the verb.
