present participle of reflect upon

simple past tense and past participle of happen upon

present participle of happen upon

Third-person singular simple present indicative form of happen upon

To accidentally encounter a person or situation; to chance upon, happen on or stumble across.

Third-person singular simple present indicative form of come upon

present participle of come upon

simple past tense of come upon

Alternative form of improve on

(archaic) Shame on; away with; curses upon.