Answer: observing

AnswerCrossword Clue
observingNotice or perceive (something) and register it as being significant
observingCelebrate or acknowledge (an anniversary)
observingTake note of or detect (something) in the course of a scientific study
observingWatch (someone or something) carefully and attentively
observingOBSERVE, to view (to look at)
observingMake a remark or comment
observingPerform or take part in (a rite or ceremony)
observingMaintain (silence) in compliance with a rule or custom, or temporarily as a mark of respect
observingFulfill or comply with (a social, legal, ethical, or religious obligation)