Open English Wordnet
Verbs
(v)fall upon, strike, come upon, light upon, chance upon, come across, chance on, happen upon, attain, discoverfind unexpectedly“the archeologists chanced upon an old tomb”, “she struck a goldmine”, “The hikers finally struck the main path to the lake”
(v)enter upon, come upon, luck intotake possession of“She entered upon the estate of her rich relatives”