heighten
verb
[ ˈhʌɪt(ə)n ]
• make or become more intense.
• "the pleasure was heightened by the sense of guilt that accompanied it"
Similar:
intensify,
increase,
enhance,
make greater,
add to,
raise,
augment,
boost,
strengthen,
sharpen,
deepen,
magnify,
amplify,
reinforce,
aggravate,
make worse,
worsen,
exacerbate,
inflame,
compound,
• make (something) higher.
• "the stage will be extended, heightening the grid by 3.4 metres"