observe

conjugation observing - observed - observed

verb: to notice or perceive something
- He observed a look of anxiety on his brother's face.
verb: to watch carefully, especially with the intention of learning or understanding
- The scientists will observe the animals in their natural habitat.
verb: to make a remark or comment
- He observed that the plan was likely to fail.
verb: to conform to or follow a law, rule, or custom
- All visitors must observe the museum's photography policy.