blithen,v.|ˈblaɪð(ə)n| [mod.f. blithe a. + -en2: cf.gladden.] trans. To make blithe. 1824Galt Rothelan II. v. ix. 255 To blithen the morning with cheerful reveillies.1830― Lawrie T. iii. xv. (1849) 134 Glimpses of merriment..which blithen the fire-side.