1. (adjective) not reversible or capable of having either side out

• nonreversible

2. (adjective) involving only one part or side

• unilateral

3. (adjective) favoring one person or side over another

• biased
• colored
• coloured
• slanted

1. (adjective) involving only one part or side

• one-party

2. (adjective) favoring one person or side over another

• partial

1. (adjective) not reversible or capable of having either side out

• reversible
• two-sided

2. (adjective) involving only one part or side

• many-sided
• multilateral