Is “Son” a Scrabble word?
Yes
SON
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 Son
/sɒn/
noun
1.One's male offspring.
“Before the birth of the man's child, he said: "I want a son, not a daughter."”
2.A male adopted person in relation to his adoptive parents.
3.A male person who has such a close relationship with an older or otherwise more authoritative person that he can be regarded as a son of the other person.