Yes, fail is playable
...and is worth 8 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Fail" Definition
noun
Failure to deliver securities to a purchaser within a specified time.
Failure to receive the proceeds of a transaction, as in the sale of stock or securities, by a specified date.
A (as by a security dealer) to deliver or receive securities within a prescribed period after purchase or sale.
verb-transitive
To abandon; forsake: His strength failed him.
To disappoint or prove undependable to: Our sentries failed us.
To give such a grade of failure to (a student): failed me in algebra.
To leave undone; neglect: failed to wash the dishes.
To omit to perform (an expected duty, for example): "We must . . . hold . . . those horrors up to the light of justice. Otherwise we would fail our inescapable obligation to the victims of Nazism: to remember” ( Anthony Lewis).
verb-intransitive
To be unsuccessful: an experiment that failed.
To become bankrupt or insolvent: Their business failed during the last recession.
To cease functioning properly: The engine failed.
To decline, as in strength or effectiveness: The light began to fail.
To give way or be made otherwise useless as a result of excessive strain: The rusted girders failed and caused the bridge to collapse.
idiom
Without fail With no chance of failure: Be here at noon without fail.
verb
To stop functioning normally .
To be or become absent or inadequate .
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