One who works hard at boring tasks (synset 110174170)
hypernym: unskilled person - a person who lacks technical training
A laborer who is obliged to do menial work (synset 110055534)
hypernym: jack, laborer, labourer, manual laborer - someone who works with their hands; someone engaged in manual labor
Work hard (synset 202424873)
"She was digging away at her math homework"; "Lexicographers drudge all day long"
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