requires

Requires is the third-person singular present tense form of the verb require. It denotes that something is deemed necessary for a purpose or that a condition or action is demanded. The sense can range from practical necessity to formal obligation.

Grammatically, require is a transitive verb. Its direct object is what is needed, as in "The project requires funding." It can take an infinitival clause, as in "The policy requires employees to be vaccinated," or a that-clause, as in "The policy requires that all employees be vaccinated." In the latter construction, many style guides prefer the subjunctive form (be, do, etc.) after that, so you might see "requires that all employees be vaccinated." The passive form, "is required," is commonly used to express obligations or prerequisites in general terms.

Etymology and related forms: the word originates from Old French requierre or requerre, from Latin requirere, formed from re- “again” and quaerere “to seek.” The related noun is requirement, and the adjective is required. Other near-synonyms include necessitate, demand, and call for, while allow and permit serve as common contrasts.

Usage contexts: in everyday English, requires links to conditions of use or necessity, such as "This job requires strong communication skills." In law and policy, it marks legally binding prerequisites. In software and documentation, it often appears in the phrase “system requirements,” indicating minimum hardware, software, or environmental conditions. The term is neutral in tone and widely applicable across domains.