1. watching carefully or noticing something
Usage: present participle of observe
2. following or obeying a rule, law, or custom
Usage: present participle of observe

1. quick to notice things; watchful and attentive

Examples

• The scientist spent hours observing the behavior of the birds.
• She was observing the traffic patterns from her window.
• The family is observing their religious traditions during the holiday.
• He has been observing a strict diet for months.
• The observing student noticed details others missed.
• Her observing nature made her an excellent detective.
• The teacher praised the observing child for spotting the error.