Definition of "sloggingly"

A plain, seemingly graceless stylist, his rather unpalatable movies, full of rabid, sloggingly orchestrated physical pain and psychic damage, picture crime as a monstrous, miasmal evil, divesting it of any glamour it ever had.

2003, Jack Shadoian, Dreams and Dead Ends: The American Gangster Film, page 196

She struggled up on her feet, limping sloggingly, leg throbbing, to the door, searching for Steve.

2011, Susan Katrinka Butler, Her Education, page 300