brighten
v.
Old English *beorhtnian "to make bright" (see bright, adj. + -en(1)). Intransitive sense, "to become brighter," attested from c.1300. Figurative use from 1590s. Related: Brightened; brightening.
| 词汇 | brighten | 
| 词根词缀 | Online Etymology Dictionary brighten v. Old English *beorhtnian "to make bright" (see bright, adj. + -en(1)). Intransitive sense, "to become brighter," attested from c.1300. Figurative use from 1590s. Related: Brightened; brightening. | 
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