LET UP

{v.}, {informal} 1. To become less, weaker, or quiet; become slower or stop. * /It's raining as hard as ever. It's not letting up at all./ * /It snowed for three days before it let up and we could go outdoors./ 2. To do less or go slower or stop; relax; stop working or working hard. * /Grandfather has been working all his life. When is he going to let up?/ * /Let up for a minute. You can't work hard all day./ * /Jim ran all the way home without letting up once./ Compare: SLOW DOWN. Contrast: BEAR DOWN. 3. To become easier, kinder, or less strict. - Usually used with "on". * /Let up on Jane. She is sick./ Syn.: EASE UP. 4. or