WordNet sense 1 (put out, as of a candle or a light):

put out

WordNet sense 2 (wet thoroughly):

dowse

WordNet sense 3 (dip into a liquid):

dip, duck

WordNet sense 4 (immerse briefly into a liquid so as to wet, coat, or saturate):

dunk, plunge, souse

WordNet sense 5 (cover with liquid; pour liquid onto):

drench, soak, sop