An event, especially a tournament, that is restricted to invited participants

Serving as an invitation; inviting. / (not comparable) Restricted to participants who have been invited.

The act of inviting; solicitation; the requesting of a person's company. / A document or verbal message conveying an invitation. / Allurement; enticement.

plural of invitation

plural of invitational

Due to having been asked or invited to do something.

(informal) An invitation.

(transitive) To ask for the presence or participation of someone or something. / (transitive) To request formally. / (transitive) To encourage.

Someone who invites.

simple past tense and past participle of invite