PLOD

(WORK) [verb] [I usually + adverb or preposition] -dd- - to work slowly and continuously, but without imagination, enthusiasm or interestWe all sit at our desks, plodding away in silence.For years, he's plodded away at the same dull routine job.Alex is just plodding along at school, making very little progress."Are you coming for lunch?" "No, I think I'll just plod on (= continue working) for a bit."