(Latin: to set in motion, to hurry, to shake; to drive; to do, to act; to lead, to conduct, to guide)

(Greek: struggle, a contest, to contend for a prize; also, to lead, set in motion, drive, conduct, guide, govern; to do, to act; by extension, pain)

(Latin: a suffix; from agere to set in motion, to drive, to lead; to do, to act)

(Greek > Latin: to do, to exercise, doing; action, activity, practice; the opposite of theory; from the stem of prassein, "to do, to act")