"plodder" in the noun sense
1. trudger, plodder, slogger
someone who walks in a laborious heavy-footed manner
2. plodder, slogger
someone who works slowly and monotonously for long hours
3. plodder, slowpoke, stick-in-the-mud, slowcoach
someone who moves slowly
"in England they call a slowpoke a slowcoach"
Source: WordNet® (An amazing lexical database of English)
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