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From Italian -accio.



  1. Used to denote substandard degree, lack of quality, or inferiority.
    ĉevalo (horse) + ‎-aĉ- → ‎ĉevalaĉo (nag)
    domo (house) + ‎-aĉ- → ‎domaĉo (shack)
    skribi (to write) + ‎-aĉ- → ‎skribaĉi (to scrawl)

Usage notes[edit]

  • 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 fi- and -aĉ- is similar, but not identical, to the difference between evil and bad in English. fi- always denotes low morality, while -aĉ- always denotes low quality.

Derived terms[edit]

  • aĉ! (oh no!, ugh!, yuck!)
  • aĉa (awful, horrible, rotten, terrible)
  • aĉe (poorly, terribly)
  • aĉulo (wretch)