can't cut the mustard

(British, American & Australian) also can't cut it (British)

if you can't cut the mustard, you cannot deal with problems or difficulties If she can't cut the mustard, we'll have to find someone else to do the job.

Common Names:

Name	Pronounced	Usage
Lavanya	-	Indian, Hindi, Telugu, Tamil
Emiliana	e-mee-LYAH-nah (Italian, Spanish)	Italian, Spanish, Portuguese
Silvija	-	Croatian, Slovene
Applegate	['æplga:θ]
Kaj (1)	KIE (Swedish)	Swedish, Danish, Norwegian
Horacio	o-RAH-thyo (Spanish), o-RAH-syo (Latin American Spanish)	Spanish