-aĉ-

Etymology
From, ultimately from. Compare 🇨🇬, 🇨🇬.

Suffix

 * 1) Used to denote substandard degree, lack of quality, or inferiority.

Usage notes

 * Unlike most Esperanto suffixes, -aĉ- does not have an inherent part of speech, but rather inherits the part of speech of the stem to which it is suffixed.
 * The difference between and -aĉ- is similar, but not identical, to the difference between  and  in English. fi- always denotes low morality, while -aĉ- always denotes low quality.