LIPOGRAM

 

  

  

  

 

A text that excludes one or more letters of the alphabet. The ingenuity demanded by the restriction clearly varies in proportion to the frequency of the letter or letters excluded. After all, most short and many extended passages of literature are unintentional lipograms.

Lipogram in c, d, f, g, j, k, l, m, p, v, w, x, y, z:
     To be or not to be: that is the question

Lipogram in a (&c.):
     To be or not to be: this is the question

Lipogram in e:
     Survival or oblivion: that is our quandry

Lipogram in t:
     Being or non-being: such is my dilemma

(from the Oulipo Compendium)