Adjectives

(a)nonreversible, one-sidednot reversible or capable of having either side out
(a)unilateral, one-sidedinvolving only one part or side“unilateral paralysis”, “a unilateral decision”
(s)biased, colored, coloured, one-sided, slantedfavoring one person or side over another“a biased account of the trial”, “a decision that was partial to the defendant”