IPA: /ˈθʌndərəs/
KK: /ˈθʌndərəs/
Very loud and powerful, like the sound of thunder.
The crowd gave a thunderous cheer when the team scored a goal.
Thunderous → It is formed from "thunder" (from Old English "þunor", meaning a loud noise or rumble) and "-ous" (meaning full of or characterized by). The word "thunderous" means characterized by or full of thunder, typically referring to a loud, booming sound.
Think of the loud noise of 'thunder' and remember that 'thunderous' describes something that is full of that loud, booming sound.