Is “Shibboleth” a Scrabble word?
Yes
SHIBBOLETH
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 Shibboleth
/ˈʃɪbəlɛθ/
noun
1.A word, especially seen as a test, to distinguish someone as belonging to a particular nation, class, profession etc.
2.A common or longstanding belief, custom, or catchphrase associated with a particular group, especially one with little current meaning or truth.
“It's about time we abandoned the bourgeois shibboleth that earning money makes you a better person.”
Synonyms: platitude, slogan, truism