What is "frustratingly"

Usage examples of "frustratingly".

Frustratingly incomplete as his observations had been, his had been the only eyes located to watch the Junction at all for Second Fleet.

They were barred to stop boys from being daredevils and he shook the bars, hoping that they could be loosened and that he and Clouter could drop down into the orphanage garden and make their way unseen to the cemetery, but the iron bars felt frustratingly solid.

Still, they seemed to move past the stone wall of the breakwater at a frustratingly slow pace, and the Harbor Patrol drew nearer, but Garrison waited, waited, because he didn't want to go into the harbor a hundred yards short of its end.

Prior fought to remain awake, but somehow, frustratingly, his consciousness departed along with his seminal fluid.

She dialed for what seemed a frustratingly long time, but was then rewarded with a series of rings that sounded like the wake-up signal of a portable alarm clock.