واجب

Etymology
of the verb.

Adjective

 * 1) necessary, indispensable, unavoidable, essential, inevitable, inescapable, requisite
 * 2) binding, obligatory, incumbent, imperative
 * 3) proper, adequate, fair

Noun

 * 1) duty, obligation
 * 2) requirement, necessity, exigency
 * 3) incumbency
 * 4) task, assignment
 * 5) homework

Etymology
From the.

Adjective

 * 1) necessary
 * 2) essential
 * 3) obligatory

Noun

 * 1) necessity

Etymology
From.

Noun

 * 1) duty, obligation
 * 2) homework