Stumble across is a phrase that means to FIND something unexpectedly or by chance. It can be used to describe an event, a person, or an object. The two crossword solutions for this phrase are 'STRIKE' and 'FIND'. STRIKE is a six-letter word that means to hit or to make contact with something forcefully. FIND is a four-letter word that means to locate or to discover something. Together, these two words form the phrase 'stumble across', which describes the act of finding something unexpectedly or by chance.