Adverbs for Observant

attentively; remarkably; noticeably; alertly; prudently; thoughtfully; meticulously; amusingly; unusually; punctiliously; keenly; aptly; expertly; skilfully; intelligently; acutely; sharply; critically; terribly; dreadfully; alarmingly; officiously; impertinently; impudently; offensively; vexatiously; carefully; watchfully; cautiously.