light

Noun

Middle English liht, light, going back to Old English lēoht, Anglian lēht, going back to Germanic *leuh-t-, neuter noun (whence also Old Frisian liācht "light," Old Saxon lioht, Middle Dutch licht, lich, Old High German lioht), probably syncopated from an earlier consonantal stem *leuhađa-, as in Gothic liuhaþ "light," derivative of an Indo-European base *leu̯k- "become bright," whence Sanskrit rócate "(it) shines, is bright," Avestan raociṇt- "brightening," Hittite lukta "it becomes light, dawns"

Adjective (1)

Middle English lyht, light, going back to Old English lēoht, Anglian lēht "filled with light, bright, clear," going back to Germanic *leuhta- (whence also Old Frisian liācht, licht "light, bright," Old Saxon lioht, Middle Dutch licht, lecht, Old High German lioht, liuhti), going back to Indo-European *leu̯k-to-, probably verbal adjective from the base *leu̯k- "become bright" — more at light entry 1

Verb (1)

Middle English lihten, lighten "to emit light, shine, dawn, shed light on, light (a fire, a candle), set fire to, illuminate," going back to Old English līohtan, līehtan, Anglian līhtan "to give light, become light, light (a candle)," going back to Germanic *leuhtije- (whence also Old Saxon liuhtan "to shine," Middle Dutch luchten, Old High German liuhten, Gothic liuhtjan "to give light"), weak verb derivative from *leuhta- "bright, light entry 2"

Adjective (2)

Middle English, from Old English lēoht; akin to Old High German līhti light, Latin levis, Greek elachys small

Verb (2)

Middle English, from Old English līhtan; akin to Old English lēoht light in weight