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v. Present participle of heighten.

adj. reaching a higher intensity

"He borrows only to shew his own Talents in heightening, refining and polishing all that is furnished him by others, and thereby secures his Character as a fine Writer, from being confounded with that of the Dull Copyer."

heightened    heightening    heightens   

increase    elevate    raise    bring up    getup   

strengthen    intensify    aggravate   

advance    increase    augment    aggravate    intensify   

Brighton    Titan    Triton    brighten    enlighten   

sickish    supervention    worsen    strengthen    crystallisation