Answer: heightens

AnswerCrossword Clue
HEIGHTENSIntensifies
HEIGHTENSIntensifies.
HEIGHTENSElevates.
HEIGHTENSElevates
HEIGHTENSGrows more intense
heightensto increase
heightensHEIGHTEN, to raise (to lift (to raise higher))
heightensto strengthen, deepen, or intensify
heightensto increase or augment
heightensto become higher
heightensto make higher
heightensto brighten or become more intense
heightensto bring out the important features of, as in a drawing