Is “Tipoff” a Scrabble word?
Yes
TIPOFF
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 Tipoff
noun
1.An obvious clue or indication.
“The broken window and overturned plant pots were a tip-off that something was wrong.”
2.A report of suspicious behaviour, especially to an authority.
“The police received a tip-off about a recent bank robbery.”