let down

verb

1. also preposition to lower
2. to fail to fulfil the expectations of (a person); disappoint
3. to undo, shorten, and resew (the hem) so as to lengthen (a dress, skirt, etc)
4. to untie (long hair that is bound up) and allow to fall loose
5. to deflate

   to let down a tyre

noun

1. a disappointment
2. the gliding descent of an aircraft in preparation for landing
3. the release of milk from the mammary glands following stimulation by the hormone oxytocin

Example Sentences

However, she said she felt “disappointed” and "let down" after reading the proposals for the updated guidelines.

From BBC

A DfE spokesman said Panorama had "exposed how these young people were let down by those who should have been keeping them safe".

From BBC

The former health minister also apologised for the way relatives of patients in hospital during the pandemic were "let down" by not getting information about their loved ones.

From BBC

It was more apathy than anger from the supporters who Gatland accepted had been let down by Wales performance.

From BBC

Health ministers across the UK say they are working on plans to improve the situation, but health leaders say that women are being let down.

From BBC