no way to tell

(There's) no way to tell.

No one can find out the answer. Tom: How long are we likely to have to wait before the plane takes off? Clerk: Sorry, sir. There's no way to tell.

Name	Pronounced	Usage
Pen	PEN	English
Young-Hee	yung-hee	Korean
Gray	[grei]
JÓSka	-	Hungarian
Hananias	-	Biblical Greek
Jaya	-	Hinduism, Tamil, Indian, Telugu, Hindi, Marathi