Idiom: Curiosity killed the Cat Posted on 26th February 201825th February 2018 by DoubleClick Curiosity killed the Cat: to warn someone not to ask too many questions about something Example: What, courage man! what though care killed a cat, thou hast mettle enough in thee to kill care. (Shakespeare) Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Posted in Idiom and tagged Idiom C.