How to sign: fail to meet the hopes or expectations of
"Her boyfriend let her down when he did not propose marriage";
Similiar / Same: disappoint
Categories: baffle, bilk, cross, foil, frustrate, scotch, spoil, thwart
Within this category: disenchant, fail, fall short
How to sign: move something or somebody to a lower position
"take down the vase from the shelf";
Similiar / Same: lower, take down, bring down, get down