Wordnet 3.0
ADJECTIVE (1)
1. 
 made steady or constant; 
- Example: "the noise became a steadied roaring"
The Collaborative International Dictionary of English v.0.48:
Steady \Stead"y\, v. t. [imp. & p. p. Steadied (-[i^]d); p.
   pr. & vb. n. Steadying.]
   To make steady; to hold or keep from shaking, reeling, or
   falling; to make or keep firm; to support; to make constant,
   regular, or resolute.
   [1913 Webster]
WordNet (r) 3.0 (2006):
steadied
    adj 1: made steady or constant; "the noise became a steadied
           roaring"