To reassure.
To make sure and secure; ensure.
To give (someone) confidence in the trustworthiness of (something).
To take dismay or fright; to be filled with dismay.
To render lifeless; to subdue; to disquiet.
To cause to feel apprehension; great sadness, or fear; to deprive of energy
A sudden or complete loss of courage and firmness in the face of trouble or danger; overwhelming and disabling terror; a sinking of the spirits
Condition fitted to dismay; ruin.