Is “Preestablish” a Scrabble word?
Yes
PREESTABLISH
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Preestablish
verb
1.To establish beforehand.
“Having preestablished that the murder weapon did not belong to the hotel, the detective widened her field of enquiry.”