Observant/əbˈzɜːrvənt/ Definition 1 of 3Pro Tip 1/3Notice Small Changes When someone is 'observant', they catch tiny differences that others might miss. The observant detective spotted the hidden clue. Pro Tip 2/3Compliment Sincerety Calling someone observant is usually a compliment, suggesting attentiveness. She thanked her observant friend for noticing her new hairstyle. Pro Tip 3/3Not Intrusive 'Observant' implies a passive role; one observes without interfering. Observant guests noticed the couple's tender moments.