unsayable

/ ʌnˈseɪəbəl /

adjective

1. too insulting, indecent, etc, to be said

noun

1. say the unsayable
   say the unsayable to express an opinion thought to be too controversial to mention

Example Sentences

Kent herself has said the movie is about parenting, the unsayable extremes of what mothers can feel.

From The Daily Beast

Talk, say the unsayable, bring his love in misty word lines before his eyes; look and forget a moment.

From Project Gutenberg