Suboptimizations is valid word

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

Definitions for SUBOPTIMIZATIONS in dictionary:

Similar words containing OPTIMIZATION without suffix s and without prefix sub

optimization25 optimizations26 suboptimization30
Find what other words can be done using letters: "suboptimizations"
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