1. decide on one's actions as one goes along, depending on the situation; - Example: "She didn't know what to expect from her new job, so she played it by ear"
WordNet (r) 3.0 (2006):
play it by ear
v 1: decide on one's actions as one goes along, depending on the
situation; "She didn't know what to expect from her new
job, so she played it by ear"