- laborious
- adj1. toilsome, toilful, difficult, uphill, tough, hard; heavy, burdensome, hefty, weighty; arduous, strenuous, straining, exertive, vigorous; tiring, tiresome, fatiguing, wearying, wearisome, tedious, weariful, wearing.2. careful, painstaking, precise, exact, detailed, particular, scrupulous, thorough; hard-working, industrious, diligent, operose, earnest, zealous, energetic; unflagging, unfailing, untiring, tireless, indefatigable; persistent, persevering, pertinacious, dogged, tenacious, unrelenting, relentless; assiduous, sedulous, constant, unremitting, steady; unswerving, undevi-ating, steadfast, plodding, Inf. plugging.3. labored, heavy, difficult, strained, forced
A Note on the Style of the synonym finder. 2014.