- Fail to support someone; also, disappoint someone. For example, I was counting on John to come, but he let me down, or The team didn't want to let down the coach. [Late 1400s] A British phrase with the same meaning is let the side down, alluding to some kind of competition (sports, politics) and dating from the mid-1900s. It is occasionally used in America.
- let someone down easy. Convey bad or disappointing news in a considerate way, so as to spare the person's self-respect. For example, The teacher knew that Paul would have to repeat the course and that there was no way to let him down easy. [Colloquial; mid-1700s] Also see let down.
- The end of the story really let me down. = I felt let down by the end of the story. [=the end of the story was disappointing]
- Do you think that "get someone down" and "let someone down" mean the same thing?
get someone down
- to cause (someone) to become sad or depressed
- The weather was really getting her down.
- Talking about politics always gets me down.