To perform; to do; to conduct oneself; to carry out.

active, vigorous, spirited, perky, vivacious

(rare) activity, vigor, vivacity

a lake (body of water)

lake

dull, spiritless / inactive / stagnant

dullness, spiritlessness / inactivity / stagnation

七七日: the forty-ninth day after a person dies; the Buddhist memorial service that occurs forty-nine days after a person dies

乳: milk; breast; latex (milky substance in plants) / 父: one's own father; a father figure; the Christian God / 致知: the pursuit of knowledge; / 遅遅, 遅々: slowness, tardiness; a long day

遅遅, 遅々: to be late