जो कथनीय न हो।

मेरे कुछ अनुभव अकथनीय हैं।
अकथ, अकथनीय, अकथ्य, अवक्तव्य, अवचनीय, अवद्य, अवाच्य, असंभाष्य, असम्भाष्य

Defying expression or description.

Indefinable yearnings.
Indescribable beauty.
Ineffable ecstasy.
Inexpressible anguish.
Unspeakable happiness.
Unutterable contempt.
A thing of untellable splendor.
indefinable, indescribable, ineffable, unspeakable, untellable, unutterable