1 toilsome, arduous, onerous, burdensome, difficult, hard, tiresome, wearisome, fatiguing. 4 hardworking, industrious, assiduous, sedulous, painstaking. See synonyms for laborious on Thesaurus.com.

What is opposite of laboriously?

Opposite of with great endeavor or resolve. idly. inactively. languidly. lazily.

What is the synonym and antonym of laborious?

laborious. Synonyms: assiduous, diligent, painstaking, indefatigable, arduous, burdensome, toilsome, wearisome, industrious, hard-working, active, difficult, tedious. Antonyms: idle, indiligent, lazy, indolent, easy, facile, light, feasible, simple.