1. (noun) someone who offers opposition

• adversary
• opponent
• opposer
• resister

1. (noun) someone who offers opposition

• individual
• mortal
• person
• somebody
• someone
• soul

2. (noun) a muscle that relaxes while another contracts

• antagonistic muscle

3. (noun) a drug that neutralizes or counteracts the effects of another drug

• drug

1. (noun) someone who offers opposition

• dueler
• duelist
• dueller
• duellist
• enemy
• foe
• foeman
• opposition
• luddite
• withstander

2. (noun) a drug that neutralizes or counteracts the effects of another drug

• estrogen antagonist
• tamoxifen
• narcotic antagonist

1. (noun) someone who offers opposition

• agonist

2. (noun) a drug that neutralizes or counteracts the effects of another drug

• synergist

1. (noun) someone who offers opposition

• antagonism
• antagonism
• antagonism
• enmity
• hostility
• antagonistic
• counter
• balk
• baulk
• jib
• resist
• contradict
• controvert
• oppose
• defend
• fight
• fight back
• fight down
• oppose
• opponent
• opposing
• oppose
• oppose
• oppose
• react

2. (noun) a muscle that relaxes while another contracts

• antagonistic
• incompatible

3. (noun) a drug that neutralizes or counteracts the effects of another drug

• antagonism
• antagonistic
• incompatible