nimbecile Posted in N Best definition nimbecile Sean; a person that is very sluggish and a nuisance to everyone. Bob is a nimbecile. nimbecile: define #2 nimbecile a very very dumb person. who normally smells like cooked carrots. You my friend are a nimbecile How satisfied are you with the definition? Looking for nimbecile meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 99 times.