one-sided in WordNet English dictionary

1. favoring one person or side over another
   "a biased account of the trial"; "a decision that was partial to the defendant"
   biased  colored  coloured  one-sided  slanted 
   
2. not reversible or capable of having either side out
   nonreversible  one-sided 
   
3. involving only one part or side
   "unilateral paralysis"; "a unilateral decision"
   unilateral  one-sided