Idiom Definition:
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"to go over someone's head"
to take an issue or decision to someone who has more authority than your direct superior
Synonyms:
allow, authority, challenging, concession, defiant, dissent, sententious, insolent, insurgent, favor, let, license, mutiny, mutinous, permission, permit, rebel, rebellious, sedition, seditious
This private is
going over his Corporal's head and talking directly to the Captain ...