require

transitive verb required, requiring

1. to ask or insist upon, as by right or authority; demand: to require obedience
2. to order; command: to require someone to be present
3. to be in need of; need: to require help
4. to call for as necessary or appropriate: work that requires a steady hand
5. to demand by virtue of a law, regulation, etc.: what is required by law
6. Archaic to ask for; request

intransitive verb