"Substate" validity in different word game dictionaries

Dictionary Validity
Scrabble US(US/Canada/Thailand - TWL/NWL) Yes
Scrabble UK(International - SOWPODS/CSW) Yes
Words with Friends(WWF) Yes

"substate" Definition

  1. a state (such as a physical or atomic state) that is a variant or division of another more broadly defined state

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