Is “Koine” a Scrabble word?
Yes
KOINE
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 Koine
/ˈkɔɪneɪ/
noun
1.A lingua franca.
2.A regional language that becomes standard over time.
Synonyms: interlanguage