be left hanging (in the air/in midair)

To remain unresolved or unaddressed. I don't think he's very knowledgeable on this topic—my very basic question was left hanging in the air.

Name	Pronounced	Usage
Kalyana	-	Indian, Telugu
Henderson	HEN-dər-sən	English
Neasa	NYAS-a, NAS-a	Irish, Irish Mythology
Mikayla	mə-KAY-lə	English (Modern)
Flo	[fləu]
Dean	[di:n]