Standard Lemma guide

thoughtlessness

noun · 4 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /ˈθɔːtləsnɪs/
  • UK: /ˈθɔːtlɪsnɪs/
  • UK: /ˈθɔːtləsnəs/
  • General-American: thôt′ləs-nĭs
  • General-American: thôt′lĭs-nĭs
  • General-American: thôt′ləs-nəs
  • General-American: /ˈθɔtləsnɪs/
  • General-American: /ˈθɔtlɪsnɪs/
  • General-American: /ˈθɔtləsnəs/
  • cot-caught-merger: thät′ləs-nĭs
  • cot-caught-merger: thät′lĭs-nĭs
  • cot-caught-merger: thät′ləs-nəs
  • cot-caught-merger: /ˈθɑtləsnɪs/
  • cot-caught-merger: /ˈθɑtlɪsnɪs/
  • cot-caught-merger: /ˈθɑtləsnəs/
  • US: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

disregard for other's feelings

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

heedless disregard for the consequences of one's actions

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

the trait of not thinking carefully before acting

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: unthoughtfulness

Antonyms: none provided

Broader terms: trait

Narrower terms: recklessness, foolhardiness, rashness, impulsiveness

4

noun

Meaning 4

the quality of failing to be considerate of others

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: inconsideration, inconsiderateness

Antonyms: thoughtfulness

Broader terms: unkindness

Narrower terms: tactlessness, bluntness

History

Etymology

Etymology tree Proto-Indo-European *teng-der. Proto-Germanic *þankijaną Proto-Germanic *þanhtaz Proto-West Germanic *þą̄ht Old English þōht Middle English thought English thought Proto-Indo-European *lewh1- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English thoughtless Proto-Germanic *-in- Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-yéti Proto-Indo-European *-eh2yéti Proto-Indo-European *-h2ti Proto-Germanic *-ōną Proto-Germanic *-inōną Proto-Indo-European *-dyé- Proto-Germanic *-atjaną Proto-Indo-European *-tus Proto-Germanic *-þuz Proto-Germanic *-assuz Proto-Germanic *-inassuz Proto-West Germanic *-nassī Old English -nes Middle English -nesse English -ness English thoughtlessness From thoughtless + -ness.

Across languages

Translations

32 source translations are retained for this English entry.

  • Catalan: desconsideració — disregard for other's feelings
  • Czech: bezohlednost — disregard for other's feelings
  • Finnish: ajattelemattomuus — disregard for other's feelings
  • French: déconsidération — disregard for other's feelings
  • French: inconsidération — disregard for other's feelings
  • Hungarian: figyelmetlenség — disregard for other's feelings
  • Hungarian: tapintatlanság — disregard for other's feelings
  • Manx: antort — disregard for other's feelings
  • Manx: meehastid — disregard for other's feelings
  • Manx: meerioose — disregard for other's feelings
  • Polish: bezwzględność — disregard for other's feelings
  • Southern Altai: куру баш (kuru baš) — disregard for other's feelings
  • Spanish: inconsideración — disregard for other's feelings
  • Spanish: desconsideración — disregard for other's feelings
  • Vietnamese: bàng quan — disregard for other's feelings
  • Vietnamese: thờ ơ — disregard for other's feelings
  • Czech: lehkomyslnost — heedless disregard for the consequences of one's actions
  • Finnish: ajattelemattomuus — heedless disregard for the consequences of one's actions
  • Finnish: välinpitämättömyys — heedless disregard for the consequences of one's actions
  • French: irréflexion — heedless disregard for the consequences of one's actions
  • Greek: ασυλλογισιά (asyllogisiá) — heedless disregard for the consequences of one's actions
  • Ancient Greek: ἀβουλία (aboulía) — heedless disregard for the consequences of one's actions
  • Ancient Greek: ἀλογιστία (alogistía) — heedless disregard for the consequences of one's actions
  • Hungarian: meggondolatlanság — heedless disregard for the consequences of one's actions
  • Hungarian: vigyázatlanság — heedless disregard for the consequences of one's actions
  • Latin: temeritās — heedless disregard for the consequences of one's actions
  • Manx: antort — heedless disregard for the consequences of one's actions
  • Norwegian Nynorsk: tankeløyse — heedless disregard for the consequences of one's actions
  • Polish: bezmyślność — heedless disregard for the consequences of one's actions
  • Slovak: ľahkomyseľnosť — heedless disregard for the consequences of one's actions
  • Southern Altai: куру баш (kuru baš) — heedless disregard for the consequences of one's actions
  • Spanish: irreflexión — heedless disregard for the consequences of one's actions