Standard Lemma guide

uneffective

adj · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

adj

Meaning 1

Synonym of ineffective.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: ineffective

Antonyms: none provided

2

adjective

Meaning 2

not producing an intended effect

Definition source: Princeton WordNet 3.0

Examples

  • an ineffective teacher
  • ineffective legislation

Meaning relationships

Synonyms: ineffective, ineffectual

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- Proto-Indo-European *h1éǵh Proto-Indo-European *-s Proto-Indo-European *h1éǵhs Proto-Italic *eks Latin ex Latin ef- Proto-Indo-European *dheh1- Proto-Indo-European *dheh1k- Proto-Indo-European *-yéti Proto-Indo-European *dhh1kyéti Proto-Italic *θakjō Proto-Italic *fakjō Latin faciō Latin efficiō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Latin effectīvusbor. French effectifder. English effective English uneffective From un- + effective.