Is “Sire” a Scrabble word?
Yes
SIRE
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 Sire
/saɪə(ɹ)/
noun
1.A lord, master, or other person in authority, most commonly used vocatively: formerly in speaking to elders and superiors, later only when addressing a sovereign.
2.A male animal; a stud, especially a horse or dog, that has fathered another.
3.A father; the head of a family; the husband.
verb
1.(of a male) to procreate; to father, beget, impregnate.