ADJ. kind | formal | open We have an open invitation to use their holiday cottage whenever we like. (figurative) An unlocked door is an open invitation to any burglar. | dinner, party, wedding
VERB + INVITATION get, have, receive | accept, take sb up on, take up We'd love to to take up your invitation to visit you some time. | decline, refuse, turn down I must sadly decline your generous invitation. | extend (formal), issue, send, send out
PREP. at sb's ~ He is here to give a concert at the invitation of the British Council. | by ~ Membership of the club is by invitation only. | from ~ We got a wedding invitation from Shashi and Len. | to ~ Have you received your invitation to the exhibition? The head extended an invitation to all parents to come and see the school.