An extremely sophisticated way to pronounce the word "derivative". This pronunciation was derived during an AP Calculus AB course. Only the coolest and most calculus-savvy people are allowed to use this version of the word.

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.