show up as

show someone up as something

to reveal that someone is really something (else). The investigation showed her up as a fraud. The test showed up the candidate as unqualified.

Name	Pronounced	Usage
Ruuben	ROO:-ben	Finnish
Perica	PE-ree-tsah	Croatian, Serbian
Covington	[kɔviŋtən]
Ukko	OOK-ko (Finnish)	Finnish, Finnish Mythology
Fulvio	FOOL-vyo	Italian
Gae	GAY	English (Rare)