How many letters does the top answer for “walk heavily and firmly, as when weary, or through mud” have?

The most common answer is footslog (8 letters).

Crossword clue: walk heavily and firmly, as when weary, or through mud

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

footslog 8 letters wn-def

walk heavily and firmly, as when weary, or through mud

plod 4 letters wn-def

walk heavily and firmly, as when weary, or through mud

trudge 6 letters wn-def

walk heavily and firmly, as when weary, or through mud