Floored

verb

1. To cover or furnish with a floor.

   "floor a house with pine boards"

2. To strike down or lay level with the floor; to knock down.
3. (driving) To accelerate rapidly.

   "As soon as our driver saw an insurgent in a car holding a detonation device, he floored the pedal and was 2,000 feet away when that car bomb exploded. We escaped certain death in the nick of time!"

4. To silence by a conclusive answer or retort.

   "Floored or crushed by him. — Coleridge"

5. To amaze or greatly surprise.

   "We were floored by his confession."