The Collaborative International Dictionary of English v.0.48:

Doing \Do"ing\, n.; pl. Doings.
   Anything done; a deed; an action good or bad; hence, in the
   plural, conduct; behavior. See Do.
   [1913 Webster]

         To render an account of his doings.      -- Barrow.
   [1913 Webster]

WordNet (r) 3.0 (2006):

doings
    n 1: manner of acting or controlling yourself [syn: behavior,
         behaviour, conduct, doings]

Moby Thesaurus II by Grady Ward, 1.0:

117 Moby Thesaurus words for "doings":
   accomplished fact, accomplishment, achievement, act, acta, action,
   actions, activeness, activism, activity, acts, address, adventure,
   affairs, affectation, air, bearing, behavior, behavior pattern,
   behavioral norm, behavioral science, blow, business, carriage,
   circumstances, comportment, concerns, condition of things,
   conditions, conduct, coup, culture pattern, custom, dealings, deed,
   demeanor, deportment, doing, effort, endeavor, enterprise, exploit,
   fait accompli, feat, folkway, gest, gestures, go, goings-on, guise,
   hand, handiwork, job, life, maintien, maneuver, manner, manners,
   march of events, matters, measure, method, methodology, methods,
   mien, militancy, modus vivendi, motion, motions, move, movement,
   movements, moves, observable behavior, operation, overt act,
   passage, pattern, performance, poise, political activism, port,
   pose, posture, practice, praxis, presence, procedure, proceeding,
   proceedings, production, relations, res gestae, run of things,
   social science, state of affairs, step, stir, stroke, stunt, style,
   tactics, the times, the world, thing, thing done, tone,
   tour de force, transaction, turn, undertaking, way, way of life,
   ways, what happens, work, works