Is “Sept” a Scrabble word?
Yes
SEPT
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 Sept
/sɛpt/
noun
1.A clan, tribe, or family, proceeding from a common progenitor (used especially of the ancient clans in Ireland).
2.An enclosure; a railing.