PLODDED

PLOD

slog, footslog, plod, trudge, pad, tramp

(verb) walk heavily and firmly, as when weary, or through mud; “Mules plodded in a circle around a grindstone”

Source: WordNet® 3.1

Verb

plodded

simple past tense and past participle of plod

Source: Wiktionary

PLOD

Plod, v. i. [imp. & p. p. Plodded; p. pr. & vb. n. Plodding.] Etym: [Gf. Gael. plod a clod, a pool; also, to strike or pelt with a clod or clods.]

1. To travel slowly but steadily; to trudge. Shak.

2. To toil; to drudge; especially, to study laboriously and patiently. "Plodding schoolmen." Drayton.

Plod, v. t.

Definition: To walk on slowly or heavily. The ploughman homeward plods his weary way. Gray.

Source: Webster’s Unabridged Dictionary 1913 Edition