verb
Meaning 1
To disappoint; to betray or fail somebody.
Definition source: English Wiktionary via Wiktextract
Usage: idiomatic, transitive
Examples
- I promised him I would meet him there, and I will not let him down.
Meaning relationships
Synonyms: cross up, dingo, sell out, stab in the back, assfuck, betray, burn, cop out, cross out, double-cross, do someone dirty, do the dirty on, false, go back on, knife, let down, play someone false, quisle, renegade, sell, sell the pass, sell down the river, sell down, swike, traitorize, turncoat
Antonyms: come through, keep faith, abide by, hold on, go to the wall for someone, stand by, stick by, stick with