don't let down

Although "Don't let down (me)" sounds like the opposite to "Don't leave hanging(me)" the two phrases are synonymous Both phrases are about support or more precisely about losing needed support. If you ask another not to let you down you're asking that person not to take away their support. On the other hand if you ask a person not to leave you hanging, again you are asking them not to take away their support and leave you "hanging"

I need your help, please don't let down (me). I'm depending on your help, don't leave hanging (me).

by orbsphere May 16, 2018

you let my tyres down

You disappointed me; or did not live up to an earlier promise.

ScoMo: You let my tyres down, Pauline.
Pauline: Eat a bag of chips, libtard.

by Gusbo December 4, 2019

let down cunt

Someone who agrees to take part in an Mad Monk challenge, but bails a month before with a shit excuse.

I double booked, and chose a wedding over a manly event and piss up. Sorry to be a let down cunt.

I dont think my foot will last the whole 10k. (the mrs wants me to walk the dogs instead.) I am also a let down cunt

by Garage Vibes April 16, 2014