Collocations for heighten - verb

dramatically, greatly
This latest attack has greatly heightened fears of an all-out war.

further

serve to
Seeing others enjoying themselves only served to heighten his sense of loneliness.

Heighten is used with these nouns as the object:
anticipation, anxiety, awareness, concern, contrast, drama, effect, expectation, fear, feeling, impression, need, perception, pressure, risk, sense, suspicion, tension