This cliché sees to throw people for a loop. The right phrase is, “I couldn’t care less.” Because if you “could care less,” you are caring some.
Still want more proof?
From the The American Heritage Dictionary of Idioms, “This expression originated about 1940 in Britain and for a time invariably used couldn’t. About 1960 could was occasionally substituted, and today both versions are used with approximately equal frequency, despite their being antonyms.”
Today’s grammar lesson comes from Steve Woodruff, President of Impactiviti.
He had a tweet a few weeks ago that made me laugh at first and then cringe a little as I started noticing it in various places and different contexts.
Woodruff’s tweet was, “btw, nothing will ‘phase’ you unless you are on a Star Trek set. However, something might or might not ‘faze’ you.”
Faze according to merriam-webster.com is an “alteration of feeze to drive away, frighten, from Middle English fesen, from Old English fēsian to drive away” as of 1830 it means “to disturb the composure of.”
Phase “is a noun or verb having to do with an aspect of something.” You can phase something in or go through a phase.
So unless you’re writing science fiction avoid using phase to mean upset.