Earlier quoted context omitted.
>Please don't tell me it's evil. I am a little confused by your comment - has the word "enormous" come to mean "evil"? If so, maybe this new came about from people referring to the "enormity of a crime". It seems to have followed a similar etymological evolution to the word "gross" as in "gross depravity". But both words just mean "big".
The word "enormity" means generally "evil": The state or quality of exceeding a measure or rule, or of being immoderate, monstrous, or outrageous. (1913 Webster). It's not a general synonym for "enormous" or "having vast size", except by confusion.
http://www.boomerangbooks.com.au/Enormous-Turnip/Katie-Dayne...
Obviously, the children's story uses "enormous" to imply that the turnip is very large, not very wicked. Somehow "the dastardly rutabaga" or "the heinous swede" makes a lot less sense in this context.
Edit: Admission - I used DDG (my default search engine), not google.