1. (adjective) fixed or established especially by order or command

• appointed
• decreed
• ordained

2. (adjective) conforming to set usage, procedure, or discipline

• official

3. (adjective) formally laid down or imposed

• positive

1. (adjective) set down as a rule or guide

• nonarbitrary
• unarbitrary

2. (adjective) fixed or established especially by order or command

• settled

3. (adjective) conforming to set usage, procedure, or discipline

• regular

4. (adjective) formally laid down or imposed

• formal

1. (adjective) conforming to set usage, procedure, or discipline

• office