* Encourage: This is the most direct antonym.
* Inspire: This implies a deeper level of motivation.
* Motivate: This focuses on the action of stimulating someone to act.
* Support: This implies providing assistance and confidence.
* Empower: This suggests giving someone the means and confidence to achieve their goals.
* Bolster: This indicates strengthening or reinforcing something.
The best antonym will depend on the specific situation and the meaning you want to convey.