Synset

requiring great physical effort
<adj.all>

lexical pointers

derivationally related form

antonym

semantic pointers

also see

difficult, hard

similar to

hard, arduous, backbreaking, grueling, gruelling, heavy, laborious, operose, punishing, toilsome dragging tiring, wearying, exhausting, wearing heavy, labored, laboured labor-intensive, labour-intensive plodding, leaden Sisyphean straining, arduous, strenuous