Standard Lemma guide

maladaptive

adj · 3 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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  • Received-Pronunciation: /ˌmæləˈdæptɪv/

1

adj

Meaning 1

Of behavior, showing inadequate or counterproductive mental and behavioral adaptation to a new situation.

Definition source: English Wiktionary via Wiktextract

Topics: human-sciences, psychology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: adaptive

2

adj

Meaning 2

Of anatomy, physiology, or behavior, showing inadequate or counterproductive evolutionary adaptation to an environment or its changes.

Definition source: English Wiktionary via Wiktextract

Qualifier: evolutionary theory

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: adaptive

3

adjective

Meaning 3

showing faulty adaptation

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: adaptive

History

Etymology

Etymology tree Proto-Indo-European *(s)mel-? Proto-Italic *malos Latin malus Latin maleder. Old French mal- English mal- Proto-Indo-European *h2éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Italic *aptos Latin aptus Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-yéti Proto-Indo-European *-eh2yéti Proto-Indo-European *-h2tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Latin apiō Proto-Indo-European *-tós Proto-Italic *-tos Latin -tus ▲ Latin -ō Latin -tō Latin aptō Latin adaptōder. Middle English *adapten English adapt Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Old French -ifbor. Middle English -yf English -ive English adaptive English maladaptive From mal- + adaptive.

Across languages

Translations

7 source translations are retained for this English entry.

  • Bulgarian: неприспособен (neprisposoben) — Translations
  • German: maladaptiv — Translations
  • German: ungeschickt — Translations
  • German: unangepasst — Translations
  • German: fehlangepasst — Translations
  • German: schlecht angepasst — Translations
  • Turkish: maladaptif — Translations