ill-formed

adjective

Poorly formed.

Similar
ungrammaticalincorrect
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Meanings

adjectiveill-formed (comparative more ill-formed, superlative most ill-formed)

comparative more ill-formed · superlative most ill-formed

  1. Poorly formed.
  2. computingNot well-formed.

Synonyms & antonyms

adjectivenot grammatical; not conforming to the rules of grammar or accepted usage

Similar
ungrammaticalincorrect
Also see
incorrectungrammatical

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

ill-formed. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/ill-formed

MLA

“ill-formed.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ill-formed. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “ill-formed,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/ill-formed.

Source: ill-formed on Wiktionary, CC BY-SA 4.0.