Is “Once” a Scrabble word?
Yes
ONCE
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 Once
/wɒn(t)s/
adverb
1.(frequency) One and only one time.
“I have only once eaten pizza.”
2.(temporal location) Formerly; during some period in the past.
“He was once the most handsome man around.”
3.Multiplied by one: indicating that a number is multiplied by one.
“Once three is three.”
conjunction
1.As soon as; when; after.
“Once he is married, he will be able to claim the inheritance.”