Is “Overtrump” a Scrabble word?
Yes
OVERTRUMP
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 Overtrump
verb
1.To play a higher trump card than the previous one in a trick
Synonyms: overruff