-x

Suffix

 * I teach all of the 30x classes. (referring to classes numbered 301, 302, 303, etc)
 * I teach all of the 30x classes. (referring to classes numbered 301, 302, 303, etc)

Etymology 2
is prototypically pronounced in English; it therefore serves as a convenient shorthand for the digraphs (,, etc.) or trigraphs ( etc.) that would otherwise represent that consonant cluster.

Etymology 4
From the use of as a neutral or nonspecific placeholder.

Etymology
From a medieval ligature for, which looked similar to the letter x and was ultimately treated as identical to it. Thus was also spelt, for instance. Later on the u was reinserted before the -x and this latter thus became an alternative spelling of -s in said position.

Pronunciation

 * Silent, except in liaison environments, when it may be pronounced . This liaison is usual in adjectives, but fairly rare in nouns.

Etymology
From. The same negation suffix is found in most North African and some Levantine dialects of Arabic.

Usage notes

 * A suffixed -x, etymologically from the same Arabic noun as the above, also occurs in a handful of Maltese words without a negative meaning, e.g., ,.

Etymology
.

Usage notes

 * and have been gradually displaced by  as gender-neutral suffixes in favor of users of text-to-speech and people with reading disorders.