English

Noun

Dr. Jekyll

1. Someone or something that has two sides — one good and one bad — and is currently showing the good side.
   • 2011, Mark Ryan, Geometry Essentials For Dummies, John Wiley & Sons, ISBN 9781118095799, page 5:

     Studying geometry is sort of a Dr. Jekyll-and-Mr. Hyde thing. You have the ordinary geometry of shapes (the Dr. Jekyll part) and the strange world of geometry proofs (the Mr. Hyde part).

See also

• Mr. Hyde