say-so
noun
• the power or act of deciding or allowing something.
• "no new employees come into the organization without his say-so"
Similar:
authorization,
approval,
seal of approval,
agreement,
consent,
assent,
permission,
endorsement,
sanction,
ratification,
approbation,
acquiescence,
confirmation,
blessing,
leave,
OK,
the go-ahead,
the green light,
the thumbs up,