{v. phr.} Let us not even think of it; may it never come true. - Used as an exclamation. * /If John fails the college entrance exam - perish the thought - he will go back to high school for one more year./ * /Perish the thought that Mary should have cancer./ Compare: GOD FORBID.
PERISH THE THOUGHT
Meaning of PERISH THE THOUGHT in English
Dictionary of English idioms . Словарь английских идиом. 2012