have a leg to stand on



not have a leg to stand on

to be in a situation where you cannot prove something The problem is, if you don't have a witness, you don't have a leg to stand on. I haven't even got the receipt to prove where I bought it, so I don't have a leg to stand on.
See Break a leg!, pull leg, Shake a leg!, Show a leg!
See also: have, leg, on, stand

Common Names:

NameGenderPronouncedUsage
Johns[dʒɔnz]
Taskill-Scottish
Sneed[sni:d]
ÍRis-Portuguese, Icelandic
BettyBET-eeEnglish
Bada-Anglo-Saxon