Is “Outdo” a Scrabble word?
Yes
OUTDO
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 Outdo
/aʊtˈdu/
verb
1.To excel; go beyond in performance; surpass.
Synonyms: outperform, outrival