transitive verb required -·quired′, requiring -·quir′·ing

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

Etymology: ME requiren < base of OFr requerre < VL *requaerere, for L requirere < re-, again + quaerere, to ask

intransitive verb