open invitation
An invitation to visit someone or perform a given action at any time.
noun
The act of inviting; solicitation; the requesting of a person's company.
an invitation to a party, to a dinner, or to visit a friend
At her invitation he outlined for her the succeeding chapters with terse military accuracy ; and what she liked best and best understood was avoidance of that false modesty which condescends, turning technicality into pabulum.
A document or verbal message conveying an invitation.
We need to print off fifty invitations for the party.
Allurement; enticement.
A line that is intentionally left open to encourage the opponent to attack.
The brief exhortation introducing the confession in the Anglican communion-office.