1. a person or thing that inhibits; something that restrains, prevents, or slows down an action or process
Usage: Also spelled 'inhibitor' (more common in scientific contexts)
2. in chemistry and biology, a substance that reduces or prevents a chemical reaction or biological process
Usage: technical; 'inhibitor' is the standard spelling in scientific literature

Examples

• Fear can be a powerful inhibiter of personal growth.
• The new corrosion inhibiter protects the metal from rust.
• Lack of confidence is often an inhibiter to success.
• The enzyme inhibiter slowed down the chemical reaction.
• Social anxiety acts as an inhibiter to public speaking.
• The medication contains an ACE inhibiter to lower blood pressure.