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agent: agent: [15] Latin agere, a verb of great semantic breadth (‘drive, lead, act, do’), has been a prolific source of English words. Its past participle, āctus, produced act, action, active, actor, actual, cachet, and exact, while other parts of its paradigm lie behind agile, agitate, ambiguous, coagulate, cogent, cogitate, examine, exigent, exiguous, and prodigal.

Its most obvious offspring, however, are agent (literally ‘(person) doing something’) and agency, formed from the Latin present participial stem agent-. Agere itself is of considerable antiquity, being related to other Indo-European verbs such as Greek ágein ‘drive, lead’, Old Norse aka ‘travel in a vehicle’, and Sanskrit ájati ‘drives’.
=> act, agile, ambiguous, cachet, cogent, demagogue, exact, examine, prodigal
revolve (v.): late 14c., "to change direction, bend around, turn (the eyes) back," from Old French revolver and directly from Latin revolvere "roll back, unroll, unwind; happen again, return; go over, repeat," from re- "back, again" (see re-) + volvere "to roll" (see volvox). In 15c., "to turn over (in the mind or heart), meditate." Meaning "travel around a central point" first recorded 1660s (earlier "cause to travel in an orbit around a central point," mid-15c.). Related: Revolved; revolving.
scout (v.1): late 14c., "observe or explore as a scout, travel in search of information," from Old French escouter "to listen, heed" (Modern French écouter), from Latin auscultare "to listen to, give heed to" (see auscultate). Related: Scouted; scouting.
pootle: "Move or travel in a leisurely manner", 1970s: blend of the verbs poodle and tootle.
aerodromic: "Of or relating to aircraft or travel in the air; aeronautical", Late 19th cent. From aerodrome + -ic. Compare slightly earlier aerodromics.