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]