1. to do what someone in authority tells you to do or what a rule or law says you must do
2. to act according to or be controlled by something

Examples

• Children must obey their parents.
• All citizens are expected to obey the law.
• The soldiers obeyed their commander’s orders.
• She refused to obey the traffic rules.
• The planets obey the laws of gravity.
• You must obey the speed limit on this road.
• The dog was trained to obey simple commands.