snowed under

overworked; exceptionally busy. Look, I'm really snowed under at the moment. Can this wait? He really has been snowed under with work.

having too much work to do She wants me to take some time off but I'm snowed under with work at the moment.

Etymology: based on the literal meaning of snowed under ( covered by so much snow that people cannot get out or move around)

Name	Pronounced	Usage
Israa	-	Arabic
ÁBrahÁM	-	Hungarian
Danni	DAN-ee	English
Stanislas	-	History
Lynne	[lin]
Mattaniah	-	Biblical