The term 'run into' can be defined as to encounter or experience something unexpectedly. This can be broken down into several crossword solutions, such as 'BUMP' (4 letters), which means to collide with something; 'RAM' (3 letters), which means to forcefully push against something; 'MEET' (4 letters), which means to come together with someone; 'INCUR' (5 letters), which means to become subject to something; 'hithard' (7 letters), which means to hit something with great force; 'chanceupon' (10 letters), which means to find something by chance; and 'happenupon' (10 letters), which means to find something by chance. All of these words describe the concept of running into something unexpectedly.