ETYM Pref. en- + lighten: cf. AS. inlîhtan. Related to Enlight.
1. To give spiritual insight to; in religion; SYN. irradiate.
2. To make understand; SYN. edify.
To paint, as of medieval manuscripts.
(Irregular preterit, past participle: lit).
To make lighter or brighter; SYN. illume, illumine, light up, illuminate.
1. To become lighter; SYN. lighten up.
2. To make more cheerful; SYN. buoy up.