Toughen
Definition 1 of 3
Pro Tip 1/3
Personal Growth
Often describes personal development through challenges. Living abroad toughened her up considerably.
Pro Tip 2/3
Emotional Strength
Can imply developing emotional resilience, not just physical. He toughened up after years of competitive sports.
Pro Tip 3/3
Preparedness
Used for indicating readiness for difficult situations. Soldiers must toughen up before deployment.