Suboptimise is valid Scrabble Word

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

Definitions for SUBOPTIMISE in dictionary:

Words related to SUBOPTIMISE

suboptimised19 suboptimises18 suboptimising20

Words that contain SUBOPTIMISE

suboptimised19 suboptimises18
Find what other words can be done using letters: "suboptimise"
https://scrabble-word.com/finder/suboptimise
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