verb
3rd person present: plods

walk doggedly and slowly with heavy steps.

"we plodded back up the hill"

Similar:
trudge
walk heavily
clump
stomp
stump
tramp
drag oneself
lumber
slog
sprauchle
traik
trog

noun
plural noun: plods
1. a slow, heavy walk.
"he settled down to a steady plod"
2. informal•British English
a police officer.
"a bunch of plods arrived, offering me a lift to the cop shop"