stunt 1 
(stŭnt)
(stŭnt)tr.v. stunt·ed, stunt·ing, stunts
To check the growth or development of.
n.
1. One that stunts.
2. One that is stunted.
3. A plant disease that causes dwarfing.
[From Middle English stunnt, foolish, short-witted, short (influenced by Old Norse stuttr, short, dwarfish), from Old English stunt.]
stunted·ness n.