Arduous

What do we mean by arduous?

Demanding great effort or labor; difficult. adjective

Testing severely the powers of endurance; strenuous. adjective

Hard to traverse, climb, or surmount. adjective

Steep, and therefore difficult of ascent; hard to climb.

Attended with great labor, like the ascent of acclivities; difficult.

Hence—3. Energetic; laborious: said of persons or actions: as, an arduous student;

Steep and lofty, in a literal sense; hard to climb. adjective

Attended with great labor, like the ascending of acclivities; difficult; laborious. adjective

Needing or using up much energy; testing powers of endurance. adjective

Burning; ardent adjective

This sense) Difficult or exhausting to traverse. adjective

Characterized by effort to the point of exhaustion; especially physical effort adjective

Difficult to accomplish; demanding considerable mental effort and skill adjective

Taxing to the utmost; testing powers of endurance adjective

Needing or using up much energy; testing powers of endurance.

Burning; ardent

Difficult or exhausting to traverse.

- a major fuckin pain in the ass. Urban Dictionary

Words that are spelled similarly to arduous:
arduous, ardurous.

Words that are triggered by (strongly associated with) the word arduous:
journey, trek, task, hike, journeys, snowy, undertaking, starvation, overland, climb, voyage, ascent, exhausted, trip, terrain, pilgrimage, jungle, dangerous, tasks, duties, conditions, schedule, process, difficult, duty, negotiations, retreat, expedition, desert, struggle, canyon, ski, mountains, rough, path, ill, foot, weather, crossing, requiring, danger, search, traveled, impossible, labor, physical.

Adjectives that are often used to describe arduous:
least, french, little, spanish.

Nouns that are often described by the adjective arduous:
task, work, duties, journey, process, undertaking, labor, struggle, tasks, labors, duty, service, labour, toil, conditions, trip, life, labours, campaign, enterprise, nature, effort, business, path, climb, training, efforts, march, job, trek, study, journeys, days, office, road, contest, course, negotiations, voyage, profession, ascent, services, hours, post, travel, search, struggles, campaigns, undertakings, mission, route, jobs, conflict, war, practice, career, circumstances, exertions, trust, discipline, enterprises, preparation, exercise, months, pursuit, attempt, occupation, expedition, toils, operation, employment, schedule, battle, affairs, apprenticeship, paths, pilgrimage, exertion, tour, operations, procedure, quest, affair, occupations.

Consonant match to arduous:
ardurous, orgeis.

Words that sound like arduous:
arduous, archness, araneus, argillous, virtuous, vertuous, argenis, argus, sergius, arches, torturous, arias, largess, aureus, arcus, arsis, ariose, artus, arcas, chargeless, argies, archaeus, arenous, arhizous, chargeous, orgillous, arius, arious, aarhus, aerious, martius, arhus, virtuose, -chroous, ceduous, surgeless, verjuice, verjus, artis, largeness, rps, arliss, armis, arlis, arales, archeress, argos, archways, argynnis, argas, bergius, archwise, argots, chargehouse, aria, artless, armless, arya, arjun, barges, argy, arjuna, armas, aras, argie, argile, arjan, aegeus, argine, arkose, arbus, agius, argil, argi, archons, aretes, arjona, arex, barjesus, araks, -aria, archaise, archdukes, archytas, arcis, arecas, aretas, areuea, arexx, argean, argentous, argier, argilla, arginase, argyros, arhats, arngus, auratus, aureolas, bar-jesus.