Determinability is valid Scrabble Word

Is determinability a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is determinability valid Words with Friends?
Words with Friends NO

Definitions for DETERMINABILITY in dictionary:

Similar words containing TERMINABIL without suffix ity and without prefix de

terminability20 interminability22 terminabilities19
Find what other words can be done using letters: "determinability"
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