Arduous

1.

(laborious, hard to accomplish, difficult, hard to do, strenuous, toilsome, fatiguing) ដែលពិបាកក្រៃលែង
Example: The work is arduous and the house are long.

1.

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

2.

Attended with great labor, like the ascending of acclivities; difficult; laborious; as, an arduous employment, task, or enterprise.

1.

complicated, Demanding, hard, intricate, involves, laborious, obscure, perplexing, toilsome, trying burdensome, difficult, onerous, tough

2.

cruel, harsh, rigorous, severe

1.

easy, effortless