"Jumpstarts" validity in different word game dictionaries

Dictionary Validity
Scrabble US(US/Canada/Thailand - TWL/NWL) No
Scrabble UK(International - SOWPODS/CSW) No
Words with Friends(WWF) Yes

Other 10-Letter Words With "j", "u", "m", "p", "s", "t", "a", "r"

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