come up against (?.)

• alight upon
• blunder upon
• bring to bay
• bump into
• chance upon
• close with
• come across
• come among
• come on
• come upon
• confront
• discover serendipitously
• encounter
• fall across
• fall among
• fall foul of
• fall in with
• fall upon
• fight hand-to-hand
• happen upon
• hit upon
• light upon
• meet
• meet head-on
• meet up with
• meet with
• pitch upon
• run across
• run into
• run smack into
• run up against
• run upon
• stumble on
• stumble upon
• tumble on