move something or somebody to a lower position;
"take down the vase from the shelf"
fail to meet the hopes or expectations of;
"Her boyfriend let her down when he did not propose marriage"
- She let down the blind.
- Let down a rope so that I can climb up.
- He won't let you down; he's reliable.
- I feel let down by his indifference.
- Don't let down even if the going is good.
- The horse let down near the end of the race and lost.
- She had to let down the child's skirt.
- The girl let down her hair.
- A naughty boy has let down the back tyre of my bike.