observe

To watch someone or something carefully, especially to learn or notice details.

• Researchers spent weeks in the field to observe nesting behaviors among coastal birds.

• Have you observed any unusual changes in how the engine operates under load?

To notice or perceive something through sight or attention.

• The technician observed small cracks forming along the foundation during the routine inspection.

• Did anyone observe the vehicle leaving the parking lot before dawn?

To state an opinion, fact, or remark.

• The reviewer observed that the novel's pacing dragged considerably during the second act.

• She observed quietly that none of the proposed deadlines seemed realistic.

To obey or comply with a law, rule, tradition, or custom.

• All drivers must observe the posted speed limits when passing through residential zones.

• Does the entire laboratory observe these strict safety protocols?

To celebrate or mark an occasion, holiday, or anniversary with formal recognition.

• The firm will close its offices on Monday to observe the federal holiday.

• How does your family traditionally observe the new year?