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

• wellheads
• well-heeled
• well hole
• well holes
• wellhouse
• well-hung
• well I declare
• wellie
• wellie-boot
• wellies
• well in
• well I never
• well-informed
• welling
• wellings
• wellington
• wellington boot
• wellington boots
• Wellingtonia
• Wellingtonias
• wellingtons
• well-intentioned
• well-judged
• well-judging
• well-kept