Read the dictionary definition of heighten. All definitions for this word.
1. make more intense, stronger, or more marked
1. The efforts were intensified
2. Her rudeness intensified his dislike for her
3. Pot smokers claim it heightens their awareness
4. This event only deepened my convictions
2. increase
1. This will enhance your enjoyment
2. heighten the tension
3. make (one's senses) more acute
1. This drug will sharpen your vision
4. make more extreme; raise in quantity, degree, or intensity
1. heightened interest
5. become more extreme
1. The tension heightened
6. increase the height of
1. The athletes kept jumping over the steadily heightened bars