Verbs

(v)light upstart to burn with a bright flame“The coal in the BBQ grill finally lit up”
(v)light, illume, illumine, light up, illuminateintroduce light into“This lamp lightens the room a bit”
(v)clear up, clear, light up, brightenbecome clear“The sky cleared after the storm”
(v)light upignite“The sky lit up quickly above the raging volcano”
(v)light up, fire up, lightbegin to smoke“After the meal, some of the diners lit up”