Wiktionary
prep. (context idiomatic English) Owing to; because of; as a result of.
Usage examples of "what with".
In fact, nobody can remember when the bite is as painful as it is in Miami this season, what with the unemployment situation among many citizens who come to Miami expecting to find work in the gambling joints, or around the racetrack.
The Raven's voice is a comforting rasp in my fishbowl, what with the thought of those aliens storming our world down below.
After the first round or two, what with dust in my eyes and my neck aching from turning my head so rapidly, I just sat back and let them spin in front of me.
And it wasn't often that the old members of Terra Nova got back together again for an old-time's-sake gig, what with Trish being so busy at the restaurant and all.
There wasn't much whisky left when they came back, and, what with that and the strain of the situation, I could only laugh when they came in.
With Keff hurt, she'd rather study the situation from a safer distance until she could figure out who was controlling things, and what with.
Bunny thought it was the most ill assorted rescue party imaginable, but, what with all the injured being tended at Kilcoole, these five had been the only ones available.
Not a wrinkle, not a rumple, a shape that - she now admitted - was nothing short of terrific, what with all the gymnastics practice.