under hat

under (one's) hat

As a secret or in confidence: Keep this information under your hat.

Name	Pronounced	Usage
RÍGhnach	-	Irish Mythology
Ywain	-	Arthurian Romance
Shakir	-	Arabic
Livingston	['liviʒstən]
Wemba	-	Anglo-Saxon (Rare)
FelicitÁS	-	Hungarian