Yes, true 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)
"True" Definition
noun
Proper alignment or adjustment: out of true.
Truth or reality. Used with the.
The quality or state of being accurate (as in alignment or adjustment).
verb-transitive
To position (something) so as to make it balanced, level, or square: trued up the long planks.
verb
To make level, square, balanced, or concentric bring or restore to a desired mechanical accuracy or form.
adjective
Accurately placed, delivered, or thrown.
Accurately shaped or fitted: a true wheel.
Computer Science Indicating one of two possible values taken by a variable in Boolean logic or a binary device.
Conforming to the definitive criteria of a natural group; typical: The horseshoe crab is not a true crab.
Consistent with fact or reality; not false or erroneous. See Synonyms at real1. See Usage Note at fact.
adverb
In accord with reality, fact, or truthfulness.
So as to conform to a type, standard, or pattern.
Unswervingly; exactly: The archer aimed true.
In accordance with fact or reality.
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