LABORIOUS

• (adj.) characterized by effort to the point of exhaustion; especially physical effort

  "worked their arduous way up the mining valley", "a grueling campaign", "hard labor", "heavy work", "heavy going", "spent many laborious hours on the project", "set a punishing pace"

  synonyms : arduous , punishing , operose , heavy , hard , gruelling , grueling , backbreaking , toilsome

  Every morning, the miners worked their arduous way up the mining valley. -added by naila_inlas

  running a marathon is grueling -added by nithi

WordNet® 3.0, © 2006 by Princeton University.

Mnemonics for laborious

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