Is “Underperform” a Scrabble word?
Yes
UNDERPERFORM
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 Underperform
verb
1.To underachieve, to not reach standards or expectations, especially with respect to a financial investment.