One of the mysteries of the English language finally explained.
Synonyms of heighten in English:
heighten
See definition of heighten
verb
1‘raising the floor level meant the roof had to be heightened’
SYNONYMS
make higher, raise, lift, lift up, elevate, upraise
ANTONYMS
lower
2‘the pleasure was heightened by the sense of guilt that accompanied it’
SYNONYMS
intensify, increase, enhance, make greater, add to, raise, augment, boost, strengthen, sharpen, deepen, magnify, amplify, reinforce
aggravate, make worse, worsen, exacerbate, inflame, compound
ANTONYMS
reduce