coming upon

(noun) a casual meeting with a person or thing. Synonyms: encounter, coming upon.

(verb) find unexpectedly. Synonyms: fall upon, strike, come upon, light upon, chance upon, come across, chance on, happen upon, attain, discover. Examples: "The archeologists chanced upon an old tomb." "She struck a goldmine." "The hikers finally struck the main path to the lake."

(verb) take possession of. Synonyms: enter upon, come upon, luck into. Example: "She entered upon the estate of her rich relatives."