Is “Overthrew” a Scrabble word?
Yes
OVERTHREW
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 Overthrew
/oʊ.vɚ.θɹu/
verb
1.To bring about the downfall of (a government, etc.), especially by force.
“I hate the current government, but not enough to want to overthrow them.”
2.To throw down to the ground, to overturn.
verb
1.To throw (something) so that it goes too far.
“He overthrew first base, for an error.”