Yes, say is playable
...and is worth 5 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Say" Definition
noun
A turn or chance to speak: Having had my say, I sat down.
Archaic Something said; a statement.
The right or power to influence or make a decision: Citizens have a say in the councils of government. All I want is some say in the matter.
An expression of opinion .
adverb
Approximately: There were, say, 500 people present.
For instance: a woodwind, say an oboe.
idiom
I say Used as an exclamation of surprise, delight, or dismay.
I say Used preceding an utterance to call attention to it: I say, do you have the time?.
That is to say In other words.
To say nothing of And there is no need to mention. Used to allude to things that fill out an idea or argument: The yard is a mess, to say nothing of the house.
You can say that again Slang Used to express strong agreement with what has just been said.
verb-transitive
To give nonverbal expression to; signify or embody: It was an act that said "devotion.”.
To indicate; show: The clock says half past two.
To repeat or recite: said grace.
To report or maintain; allege.
To utter aloud; pronounce: The children said, "Good morning.”.
verb-intransitive
To make a statement; express oneself: The story must be true because the teacher said so.
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