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