34 Moby Thesaurus words for "hit upon": alight upon, arrive at, arrive upon, blunder upon, bump into, chance upon, come across, come at, come down on, come on, come up against, come upon, descend upon, discover serendipitously, drop on, encounter, fall in with, fall on, fall upon, get at, happen upon, light upon, meet up with, meet with, pitch upon, reach, run across, run into, run up against, settle on, strike upon, stumble on, stumble upon, tumble on

Source: Moby Thesaurus II by Grady Ward, 1.0