湧 - boil, ferment, seethe

to well (up); to gush out (of water); to spring out; to surge

welling of water; spring water; spring

to gush out

to happen suddenly; to occur unexpectedly; to appear out of the blue

gushing out; welling up; springing up

upwelling

to breed (e.g. maggots); to let breed

spring water

welling (up); gushing forth (of water); springing out; surging

hydrothermal discharge zone

to feel that something is true or actually happening; to hit one (realization, thought); to sink in

to tingle with excitement; to be full of excitement; to be thrilled