per‧mis‧sion S2 W3 [uncountable]
ask/request/apply for permission give/grant permission get/obtain/receive permission have permission (to do something) refuse/deny (somebody) permission with/without (somebody's) permission special/written permission by kind permission of somebody formal (=used for saying who allowed something)
You must ask permission before taking any photographs inside the church.
They didn't have permission to cross the frontier.
Who gave him permission to leave class early?
Pages should not be copied without the permission of the publisher.
With your permission, I should like to visit Mrs Thorne myself.
The paintings are reproduced by kind permission of the National Gallery.