All three are valid Scrabble™ words (English): Scrabble™ Official Word Check
]]>Y: Yay!
]]>W : Wow
]]>Moving to the next letter,
Smiles.
]]>Both are valid Scrabble words: Scrabble™ Official Word Check
That link is to the Collins online Scrabble word checker that uses the official tournament word list, including over a quarter of a million permissible words. It's endorsed by Mattel and the World English-Language Scrabble™ Players’ Association.
]]>R : Rudder.
]]>