Brightliest

Oh, never till then I knew the worth / Of woman’s love, its power to bless; / Which like the star, shines brightliest forth, / In darkest hour of bitterness!

Source: wiktionary

Then Hector strove to break the rang’d array, / Where brightliest mail’d the densest squadrons lay; […]

Source: wiktionary

Him I remember while this life endures. / The day lives brightliest in my memory / When from a matin fate he snatched my days.

Source: wiktionary

When danger, or the dread of it, encompasses the soul—when timidity fluctuates and excitement roars—who then controls? Not he, whose intellect is most logically practised—whose memory is richest stored—whose tongue is brightliest eloquent: but he whose eye blenches least—whose heart beats the calmest: he, it is, is master of the hour.

Source: wiktionary