To take notice of by appropriate conduct; to conform one's action or practice to; to keep; to heed; to obey; to comply with; as, to observe rules or commands; to observe civility.
- To be or become aware of, especially through careful and directed attention; notice.
- To watch attentively: observe a child's behavior.
- To make a systematic or scientific observation of: observe the orbit of the moon.
- To say casually; remark.
- To adhere to or abide by: observe the terms of a contract.
- To keep or celebrate (a holiday, for example): observe an anniversary.
- To take notice.
- To say something; make a comment or remark.
- To watch or be present without participating actively: We were invited to the conference solely to observe.