Answer: STEEPENS

AnswerCrossword Clue
STEEPENSIncreases in slope
STEEPENSGets harder to climb
STEEPENSUps a grade
STEEPENSGrows precipitous.
STEEPENSBecomes precipitous.
STEEPENSIncreases.
STEEPENSIncreases
STEEPENSGets more arduous, in a way
STEEPENSBecomes more inclined
STEEPENSRises exorbitantly, as prices
STEEPENSInclines more and more
STEEPENSIncreases inclination
STEEPENSIncreases in price
steepensBecome or cause to become steeper
steepensSTEEPEN, to make steep (precipitous)