Hackish is an adjective that refers to something that is done unprofessionally or clumsily. Synonyms for hackish include amateurish, unskilled, clumsy, crude, and inept. These words can be used when describing someone or something that is not up to par in terms of skill or expertise. Another word that can be used as a synonym for hackish is outdated, as the term hackish can also refer to methods or techniques that are no longer effective or accepted. Using a more appropriate synonym for hackish can help convey a more accurate description and avoid negative connotations that can come with the word.