plod

bang away, beaver (away), dig (away), drudge, endeavor, fag, grub, hump, hustle, labor, moil, peg (away), plow, plug, slave, slog, strain, strive, struggle, sweat, toil, travail, tug, work

blunder, bumble, flog [British], flounder, limp, lumber, struggle, stumble, trudge

crawl, creak (along), creep, drag, inch, limp, nose, ooze, poke, slouch, snail

barge, clump, flog [British], flounder, galumph, lumber, lump, pound, scuff, scuffle, shamble, shuffle, slog, slough, stamp, stomp, stumble, stump, tramp, tromp, trudge