1. extremely loud and deep like thunder
2. expressing strong approval or disapproval in a very loud way

Examples

• The thunderous roar of the waterfall could be heard from miles away.
• The crowd gave the performer thunderous applause.
• His thunderous voice echoed through the empty hall.
• The thunderous crash of the waves against the rocks was frightening.
• She received thunderous boos from the angry audience.
• The thunderous sound of the jet engines startled everyone.
• The speaker’s thunderous delivery captivated the entire auditorium.