Thunderstrokes, as a word, refers to the sound of thunder during a storm. Its antonyms would be words that indicate silence or a calm atmosphere. Some possible antonyms for thunderstrokes include quiet, stillness, tranquility, serenity, peace, and calm. During a peaceful night, one might experience a serene stillness with no sign of thunderstrokes or any other loud noises. Conversely, during a roaring storm, the sound of thunderstrokes would fill the air, creating a chaotic vibe that contrasts strongly with the tranquility of silence. Overall, these antonyms highlight the contrast between noisy, stormy weather and the peacefulness of a calm atmosphere.