(an act of) feeling, showing or saying, that one is satisfied, that something is right, that one agrees

authorization

(to make) a short, high-pitched signal (e.g. in a hospital to call a doctor)

indication; authorization

leather squares used to prevent a horse from seeing sideways

indication; authorization

the act of clearing up, removing unwanted things, making something tidy

permission for activity

the act of confirming or being confirmed (all senses)

ratification, validation, proof

agreement

agreement; concession

permission (the usual word); to go away from (a person, place etc)

permission

(a written statement giving) permission from a person in authority to do something

authority, permission

the authority given to representatives by voters, members of a trade union etc

authority, order

written authority giving permission;

authorization

the right or permission given by authority to do something; an action used against a person, country etc breaking a rule of acceptable moral behaviour, a law etc

authorization

with agreement but not willingly

permission

a written order giving official authority; to make (something) seem justified

authorization