observe definition

1. watch attentively
• examples: Please observe the reaction of these two chemicals
2. behave as expected during of holidays or rites
• examples: Keep the commandments
• examples: celebrate Christmas
• examples: Observe Yom Kippur
3. stick to correctly or closely
• examples: The pianist kept time with the metronome
• examples: keep count
• examples: I cannot keep track of all my employees
4. conform one's action or practice to
• examples: keep appointments
• examples: she never keeps her promises
• examples: We kept to the original conditions of the contract