Antonyms are words that have the opposite meaning of a given word. For "wast dumbstruck", the antonyms could include words like: expressionful, communicative, vocal, articulate, outspoken, fluent, eloquent, and talkative. Instead of being silent and amazed, these words suggest someone who is freely expressive or engaged in conversation.
Other antonyms could be words like: alert, aware, attentive, observant, conscious, and vigilant. These suggest someone who is fully present and actively engaged in their surroundings, rather than being stunned into silence. It is always helpful to have a variety of words at hand, as they help to increase understanding and communication with others.