ease up
     v 1: move in order to make room for someone for something; "The
          park gave way to a supermarket"; "`Move over,' he told
          the crowd" [syn: {move over}, {give way}, {give}, {yield}]
     2: become less intense [syn: {ease off}, {slacken off}, {flag}]
     3: reduce pressure or intensity; "he eased off the gas pedal
        and the car slowed down" [syn: {ease off}, {let up}]
Source: WordNet® 2.0