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)

• wave down
• wave energy
• wave equation
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• wave farm
• wave farms
• waveform
• waveforms
• wavefront
• wavefronts
• wave function
• wave functions
• waveguide
• waveguides
• wavelength
• wavelengths
• waveless
• wavelet
• wavelets
• wavelike
• wavellite
• wavellites
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• wheatier
• wheatiest