Is “Annul” a Scrabble word?
Yes
ANNUL
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 Annul
/əˈnʌl/
verb
1.To formally revoke the validity of.
2.To dissolve (a marital union) on the grounds that it is not valid.