Answer: DEEPEN

AnswerCrossword Clue
DEEPENDredge
DEEPENKeep dredging
DEEPENIntensify.
DEEPENExtend downward.
DEEPENRender darker.
DEEPENDredge.
DEEPENBecome intense.
DEEPENIncrease in degree.
DEEPENGrow more obscure.
DEEPENMake more profound.
DEEPENDig further
DEEPENMake darker
DEEPENBecome more serious
DEEPENExcavate
DEEPENDig down?
DEEPENGet worse, as losses
DEEPENCompound or intensify
DEEPENMake more meaningful
DEEPENThicken, as a mystery
DEEPENGain intensity
DEEPENGrow stronger, as a friendship
DEEPENIntensify, as feelings
DEEPENDig out
DEEPENMake navigable, maybe
DEEPENDredge, maybe
deepento make or become deep or deeper
deepento make deep (extending far down from the surface)
deepento decrease in atmospheric pressure
DEEPENDredge, say
DEEPENBecome more profound
DEEPENIntensify
DEEPENGet less superficial
DEEPENGet farther down
DEEPENMake more navigable, as a channel
DEEPENExcavate further
DEEPENBecome more intense
DEEPENChange the channel?
DEEPENGrow more intense
DEEPENBecome more complex
DEEPENDig farther down