proactively UK /pɹəʊˈæk.tɪv.li/US /pɹoʊˈæk.tɪv.li/ adverb1 •In a proactive manner; so as to look or plan ahead.[D]uring each lecture, an observation journal was kept to record what happened in the classroom, focusing on whether and when students enjoyed or proactively participated in classroom activities. — 2017 formsmore proactively · most proactively