opponent /ə-pōˈnənt/

1. The person opposed to one in a contest, struggle, battle, etc
2. Someone who opposes a course of action, belief, etc
3. An opponent muscle (anatomy)

1. Opposing
2. Antagonistic (with to; formerly with with)
3. Placed opposite or in front
4. (of a muscle) opposing one part (eg a digit) to another (anatomy)

oppoˈnency noun

• spade bone
• spade bones
• spaded
• spade feet
• spadefish
• spadefishes
• spade foot
• spadeful
• spadefuls
• spade guinea
• spade guineas
• spadelike
• spademan
• spademen
• spader
• spaders
• spades
• spadesman
• spadework
• spadeworks
• spadger
• spadgers
• spadiceous
• spadices
• spadicifloral