letdown(redirected from let-down)
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Something that is disappointing, usually because it did not meet one's high expectations about it. Not getting tickets to the game after my aunt promised them to us is a real letdown. Sue was really excited about her new position, but now that's she's in it, it seems to be a letdown.
set (oneself) up for a letdown
To set one's expectations so high that one will inevitably be disappointed by the outcome. Sometimes hyphenated as "let-down." I know you're really excited for this movie to come out, but I think you're setting yourself up for a letdown. John was so convinced that his relationship with Mary was perfect that he set himself up for a let-down in the long run.