No. Oz is not a valid Scrabble word.
No. Qu is not a valid Scrabble word.
No, "wind" is not a valid base word that can be combined with the prefix "dis." The prefix "dis" typically combines with words to indicate negation, reversal, or removal of the base word's meaning, such as "dislike" or "dismantle."
Yes, "Scrabble" is considered a valid word in the game of Scrabble.
Yes. Speculate is a valid Scrabble word.
Nope. Indew is not a valid Scrabble word.
Yes, "ax" is a valid Scrabble word.
Yes, "keyword" is a valid Scrabble word.
Yes, "scramble" is a valid Scrabble word.
Yes. Ex is a valid Scrabble word.
Yes, "lez" is a valid word in the game of Scrabble.
Yes, "bingo" is considered a valid word in the game of Scrabble.