Being proactive or taking initiative; acting rather than being passive.
能動的に学ぶ学生は理解が深まりやすい。
Students who learn proactively tend to deepen their understanding.
チームでは能動的に意見を出すことが求められる。
In the team, you're expected to actively offer your opinions.
文法では、能動態は主語が行為を行う文を指す。
In grammar, the active voice refers to sentences where the subject performs the action.