Noah Webster's Dictionary 1. (v.) To make bright or brighter; to make to shine; to increase the luster of; to give a brighter hue to. 2. (v.) To make illustrious, or more distinguished; to add luster or splendor to. 3. (v.) To improve or relieve by dispelling gloom or removing that which obscures and darkens; to shed light upon; to make cheerful; as, to brighten one's prospects. 4. (v.) To make acute or witty; to enliven. 5. (v. i.) To grow bright, or more bright; to become less dark or gloomy; to clear up; to become bright or cheerful.

Multi-Version Concordance Brighten (3 Occurrences) Ezra 9:8 Now for a little moment grace has been shown from Yahweh our God, to leave us a remnant to escape, and to give us a nail in his holy place, that our God may lighten our eyes, and give us a little reviving in our bondage. (See RSV) Job 9:27 If I say, I will forget my complaint, I will leave off my sad countenance, and brighten up, (DBY YLT) Job 10:20 Are not my days few? Cease then, and put from me, And I brighten up a little, (YLT)