Omegapsically

*Alphabetically: Arranged in the customary order of the letters of a language.
Alpha and beta are the first two letters of the greek alphabet.

Omega and psi are the last two letters of the greek alphabet, going backward...
Therefore I define:
*Omegapsically: Arranged in the customary reverse order of the letters of a language.

Looks like I'm the only one on the Internet to think that though: http://www.google.com.au/search?q=omegapsically