(with from) To get off or exit a vehicle or animal; to descend; to dismount.

"He alighted from his horse."

(with on or at) To descend and settle, lodge, rest, or stop.

"A flying bird alights on a tree."

(followed by upon) To find by accident; to come upon.

To befall or betide.

To make light or less heavy; lighten; alleviate.

To light; light up; illuminate.

To set light to; light.