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
Hrafn	-	Icelandic, Ancient Scandinavian
Chandrakanta	-	Indian, Hindi
Bratoslav	-	Medieval Slavic
Inga	ING-ah (Swedish), ING-gah (German), EEN-gah (Russian)	Swedish, Danish, Norwegian, Icelandic, Latvian, Lithuanian, German, Russian, Ancient Scandinavian, A
Anatole	-	French
Klara	KLAH-rah (German, Russian, Polish)	Swedish, Norwegian, Danish, Icelandic, German, Russian, Ukrainian, Polish, Slovene, Croatian