Lipogram
A Lipogram purposefully excludes a particular letter of the
alphabet. A Liponym excludes a particular word, though it is hard to make this interesting.
Excluding multiple letters, as with an anagram, or a poem written using a Boggle set, is considered a lipogram. Also see Univocalic.
Source
Oulipo, Traditional
Examples
The Lipogram is, according to Perec, "The oldest systematic artifice of western literature." The lipogram has a long hi