The phrase "dash one hope" represents a feeling of disappointment or despair, indicating that something once believed in or hoped for has been destroyed. Antonyms for this phrase could include "restore hope," "bolster confidence," or "rekindle optimism." These alternatives suggest the possibility of positive change and a renewed sense of possibility, rather than the bleak outcome suggested by "dash one hope." Other antonyms might include "encourage faith," "inspire conviction," and "instill assurance." Whatever the specific words used to counteract "dash one hope," the overall message is one of renewed faith and positive possibility in the face of adversity.