required

As a verb required

is past tense of require.

As an adjective optional is

not compulsory; left to personal choice; elective.

As verbs the difference between required and supposed

is that required is past tense of require while supposed is past tense of suppose.

As an adjective supposed is

presumed to be true, but without proof.

As verbs the difference between furnish and required

is that furnish is (lb) to provide a place with furniture, or other equipment while required is (require).

As a noun furnish

is material used to create an engineered product.

As an adjective needful

is needed; necessary; mandatory; requisite; indispensible.

As a noun needful

is anything necessary or requisite.

As a verb required is

past tense of require.

As verbs the difference between required and instructed

is that required is past tense of require while instructed is past tense of instruct.

As verbs the difference between want and required

is that want is to wish for or to desire (something) while required is past tense of require.

As a noun want

is a desire, wish, longing.

As a proper noun Want

is a personification of want.

As a verb required

is past tense of require.

As an adjective requirable is

capable of being required.

As an adjective relevant

is directly related, connected, or pertinent to a topic.

As a verb required is

past tense of require.

As an adjective eligible

is eligible.

As a verb required is

(require).

As verbs the difference between requiring and required

is that requiring is while required is (require).

As a noun requiring

is (archaic) requirement.