upbrighten

English

Etymology

up- +‎ brighten

Verb

upbrighten (third-person singular simple present upbrightens, present participle upbrightening, simple past and past participle upbrightened)

1. (transitive, intransitive, poetic) To make or become brighter.
   • 1904, Louis Kaufman Anspacher, Tristan and Isolde: A Tragedy, page 69:

     I looked on thee, at first, as looks the sun / Upon the earth upbrightening in his glance, […]