heighten

From Middle English heightenen, hyghtenen, equivalent to height +‎ -en (verbal suffix).

• IPA^(key): /ˈhaɪtən/
• Rhymes: -aɪtən

heighten (third-person singular simple present heightens, present participle heightening, simple past and past participle heightened)

1. To make high; to raise higher; to elevate.
2. To advance, increase, augment, make larger, more intense, stronger etc.

   to heighten beauty

   to heighten a flavor or a tint

   to heighten his awareness

   “That’s heightened by the impact of climate change,” she added.

   • 2006 December 6, Ashley Seager, “Employment rise gives chancellor a boost”, in The Guardian‎:

     If Mr Brown chooses, he could raise his estimate of the economy's "trend" rate of growth in the coming years and so heighten his hopes of tax revenues.