toughener
/ˈtʌfənər/
noun
- A substance or thing that makes something stronger or more durable.
- This chemical toughener is used in the production of shatterproof glass.
- The manufacturer added a toughener to the plastic to prevent cracking.
- A rubber toughener was mixed into the epoxy to improve its impact resistance.
- A person or thing that makes someone mentally or emotionally stronger.
- Her coach was a real toughener, pushing her to overcome every fear.
- The boot camp was known as a toughener for new recruits.
- Living alone in a new city was a toughener that built his confidence.
Synonyms