What's in aid of?

What's something in aid of?

(British & Australian informal)

something that you say when you want to know why someone has done something I heard the shouting from the other side of the building. What was that in aid of? A present! What's this in aid of?

Common Names:

Name	Pronounced	Usage
Armytage	['a:mitidʒ]
Ju-Won	joo-won	Korean
Ebele	-	Western African, Igbo
Zenaida	-	Late Greek
Svetovid	-	Slavic Mythology
MÉAbh	MAYV	Irish, Irish Mythology