present participle of require

(archaic) A requirement.

plural of requiring

(obsolete) To ask (someone) for something; to request. / To demand, to insist upon (having); to call for authoritatively.

A necessity or prerequisite; something required or obligatory. Its adpositions are generally of in relation to who or what has given it, on in relation to whom or what it is given to, and for in relation to what is required.

plural of requirement

simple past tense and past participle of require

Necessary; obligatory; mandatory.

Third-person singular simple present indicative form of require

Capable of being required.