floored

(verb) surprise greatly; knock someone's socks off. Synonyms: shock, floor, ball over, blow out of the water, take aback. Example: "I was floored when i heard that i was promoted."

(verb) knock down with force. Synonyms: deck, coldcock, dump, knock down, floor. Example: "He decked his opponent."

(adj) provided with a floor. Synonyms: floored (vs. ceilinged).