Standard Lemma guide

idiosyncrasy

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.

  • Received-Pronunciation: /ˌɪdɪəʊˈsɪŋkɹəsi/
  • Received-Pronunciation: /ˌɪdɪəˈsɪŋkɹəsi/
  • General-American: /ˌɪdiəˈsɪŋkɹəsi/
  • General-American: /ˌɪdioʊˈsɪŋkɹəsi/
  • Australian: /ˌɪdiəˈsɪŋkɹəsi/
  • Queensland Recorded audio is listed in the source snapshot.
  • New-Zealand: /ˌədiəˈsəŋkɹəsi/
  • CMU ARPABET: IH2 D IY0 OW0 S IH1 N K R AH0 S IY2 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A behavior or way of thinking that is characteristic of a person or a group.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: eccentricity, foible, habit, idiocrasy, mannerism, oddity, quirk, vagary

Antonyms: none provided

2

noun

Meaning 2

A peculiar individual reaction to a generally innocuous substance or factor; a risk factor.

Definition source: English Wiktionary via Wiktextract

Qualifier: originally

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A peculiarity that serves to distinguish or identify.

Definition source: English Wiktionary via Wiktextract

Examples

  • He mastered the idiosyncrasies of English spelling and speech.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

a behavioral attribute that is distinctive and peculiar to an individual

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: foible, mannerism

Antonyms: none provided

Broader terms: peculiarity, specialness, specialty, speciality, distinctiveness

History

Etymology

First attested in 1604, in modern sense since 1665, from Ancient Greek ἰδιοσυγκρασία (idiosunkrasía, “one’s own temperament”), from ἴδιος (ídios, “one’s own”) + σύν (sún, “together”) + κρᾶσις (krâsis, “temperament”). By surface analysis, idio- + syn- + -crasy.

Across languages

Translations

116 source translations are retained for this English entry.

  • Bulgarian: индивидуалност (individualnost) — way of behaving or thinking
  • Bulgarian: начин на мислене (način na mislene) — way of behaving or thinking
  • Bulgarian: идиосинкра́зия (idiosinkrázija) — way of behaving or thinking
  • Catalan: idiosincràsia — way of behaving or thinking
  • Danish: idiosynkrasi — way of behaving or thinking
  • Danish: særpræg — way of behaving or thinking
  • Danish: egenart — way of behaving or thinking
  • Dutch: eigenheid — way of behaving or thinking
  • Dutch: eigenaardigheid — way of behaving or thinking
  • Esperanto: idiosinkrazio — way of behaving or thinking
  • Finnish: omalaatuisuus — way of behaving or thinking
  • French: idiosyncrasie — way of behaving or thinking
  • German: Eigenheit — way of behaving or thinking
  • German: Eigenart — way of behaving or thinking
  • German: Eigensinn — way of behaving or thinking
  • Greek: ιδιοσυγκρασία (idiosygkrasía) — way of behaving or thinking
  • Greek: νοοτροπία (nootropía) — way of behaving or thinking
  • Ancient Greek: ἰδιοσυγκρασία (idiosunkrasía) — way of behaving or thinking
  • Italian: idiosincrasia — way of behaving or thinking
  • Italian: mania — way of behaving or thinking
  • Italian: fissazione — way of behaving or thinking
  • Japanese: 個性 (kosei) — way of behaving or thinking
  • Japanese: 特異体質 (tokuitaishitsu) — way of behaving or thinking
  • Polish: osobliwość — way of behaving or thinking
  • Polish: dziwactwo — way of behaving or thinking
  • Polish: idiosynkrazja — way of behaving or thinking
  • Portuguese: idiossincrasia — way of behaving or thinking
  • Romanian: particularitate — way of behaving or thinking
  • Romanian: idiosincrazie — way of behaving or thinking
  • Russian: идиосинкрази́я (idiosinkrazíja) — way of behaving or thinking
  • Spanish: idiosincrasia — way of behaving or thinking
  • Spanish: chiripiorca — way of behaving or thinking
  • Swedish: egenart — way of behaving or thinking
  • Swedish: egenhet — way of behaving or thinking
  • Swedish: egenskap — way of behaving or thinking
  • Turkish: ayrıklılık — way of behaving or thinking
  • Turkish: huy — way of behaving or thinking
  • Turkish: kişisel özellik — way of behaving or thinking
  • Turkish: tuhaflık — way of behaving or thinking
  • Turkish: mizaç — way of behaving or thinking
  • Turkish: tabiat — way of behaving or thinking
  • Ukrainian: ідіосинкразія (idiosynkrazija) — way of behaving or thinking
  • Vietnamese: cá tính — way of behaving or thinking
  • Vietnamese: cá biệt — way of behaving or thinking
  • Yiddish: אידיאָסינקראַסי (idyosinkrasi) — way of behaving or thinking
  • Bulgarian: идиосинкра́зия (idiosinkrázija) — language or behaviour particular to an individual or a group
  • Catalan: idiosincràsia — language or behaviour particular to an individual or a group
  • Dutch: jargon — language or behaviour particular to an individual or a group
  • Dutch: eigenaardigheid — language or behaviour particular to an individual or a group
  • French: idiosyncrasie — language or behaviour particular to an individual or a group
  • Georgian: თავისებურება (tavisebureba) — language or behaviour particular to an individual or a group
  • Georgian: მახასიათებელი (maxasiatebeli) — language or behaviour particular to an individual or a group
  • German: Eigenheit — language or behaviour particular to an individual or a group
  • German: Eigenart — language or behaviour particular to an individual or a group
  • German: Idiosynkrasie — language or behaviour particular to an individual or a group
  • Italian: idiosincrasia — language or behaviour particular to an individual or a group
  • Polish: idiosynkrazja — language or behaviour particular to an individual or a group
  • Portuguese: idiossincrasia — language or behaviour particular to an individual or a group
  • Romanian: trăsătură — language or behaviour particular to an individual or a group
  • Russian: отличи́тельная осо́бенность (otličítelʹnaja osóbennostʹ) — language or behaviour particular to an individual or a group
  • Russian: отличи́тельная черта́ (otličítelʹnaja čertá) — language or behaviour particular to an individual or a group
  • Spanish: idiosincrasia — language or behaviour particular to an individual or a group
  • Vietnamese: cá tính — language or behaviour particular to an individual or a group
  • Vietnamese: cá biệt — language or behaviour particular to an individual or a group
  • Vietnamese: đặc tính — language or behaviour particular to an individual or a group
  • Vietnamese: đặc điểm — language or behaviour particular to an individual or a group
  • Bulgarian: идиосинкра́зия (idiosinkrázija) — (medicine) individual reaction to a generally innocuous substance
  • Catalan: idiosincràsia — (medicine) individual reaction to a generally innocuous substance
  • Danish: overfølsomhed — (medicine) individual reaction to a generally innocuous substance
  • Danish: idiosynkrasi — (medicine) individual reaction to a generally innocuous substance
  • Dutch: idiosyncrasie — (medicine) individual reaction to a generally innocuous substance
  • Dutch: overgevoeligheid — (medicine) individual reaction to a generally innocuous substance
  • Estonian: ülitundlikkus — (medicine) individual reaction to a generally innocuous substance
  • Finnish: idiosynkrasia — (medicine) individual reaction to a generally innocuous substance
  • Finnish: yliherkkyys — (medicine) individual reaction to a generally innocuous substance
  • French: idiosyncrasie — (medicine) individual reaction to a generally innocuous substance
  • Georgian: იდიოსინკრაზია (idiosinḳrazia) — (medicine) individual reaction to a generally innocuous substance
  • German: Idiosynkrasie — (medicine) individual reaction to a generally innocuous substance
  • Greek: ευαισθησία (evaisthisía) — (medicine) individual reaction to a generally innocuous substance
  • Italian: idiosincrasia — (medicine) individual reaction to a generally innocuous substance
  • Italian: insofferenza — (medicine) individual reaction to a generally innocuous substance
  • Italian: intolleranza — (medicine) individual reaction to a generally innocuous substance
  • Persian: فردویژگی (fard-vižegi) — (medicine) individual reaction to a generally innocuous substance
  • Polish: idiosynkrazja — (medicine) individual reaction to a generally innocuous substance
  • Portuguese: idiossincrasia — (medicine) individual reaction to a generally innocuous substance
  • Romanian: idiosincrasie — (medicine) individual reaction to a generally innocuous substance
  • Russian: идиосинкрази́я (idiosinkrazíja) — (medicine) individual reaction to a generally innocuous substance
  • Serbo-Croatian: idiosinkrazija — (medicine) individual reaction to a generally innocuous substance
  • Swedish: idiosynkrasi — (medicine) individual reaction to a generally innocuous substance
  • Bulgarian: осо́беност (osóbenost) — peculiarity that serves to distinguish or identify
  • Chinese Mandarin: 特性 (tèxìng) — peculiarity that serves to distinguish or identify
  • Danish: særhed — peculiarity that serves to distinguish or identify
  • Danish: særegenhed — peculiarity that serves to distinguish or identify
  • Danish: særpræg — peculiarity that serves to distinguish or identify
  • Danish: idiosynkrasi — peculiarity that serves to distinguish or identify
  • Dutch: kenmerk — peculiarity that serves to distinguish or identify
  • Dutch: eigenaardigheid — peculiarity that serves to distinguish or identify
  • Finnish: ominaispiirre — peculiarity that serves to distinguish or identify
  • French: idiosyncrasie — peculiarity that serves to distinguish or identify
  • German: Eigenheit — peculiarity that serves to distinguish or identify
  • German: Eigenart — peculiarity that serves to distinguish or identify
  • German: besonderes Merkmal — peculiarity that serves to distinguish or identify
  • Greek: ιδιοσυγκρασία (idiosygkrasía) — peculiarity that serves to distinguish or identify
  • Hungarian: jellemző sajátosság — peculiarity that serves to distinguish or identify
  • Hungarian: egyéni sajátosság — peculiarity that serves to distinguish or identify
  • Italian: idiosincrasia — peculiarity that serves to distinguish or identify
  • Italian: avversione — peculiarity that serves to distinguish or identify
  • Japanese: 特性 (tokusei) — peculiarity that serves to distinguish or identify
  • Norwegian: særegenhet — peculiarity that serves to distinguish or identify
  • Plautdietsch: Ieejenschoft — peculiarity that serves to distinguish or identify
  • Portuguese: idiossincrasia — peculiarity that serves to distinguish or identify
  • Romanian: caracteristică — peculiarity that serves to distinguish or identify
  • Romanian: particularitate — peculiarity that serves to distinguish or identify
  • Russian: отличи́тельная осо́бенность (otličítelʹnaja osóbennostʹ) — peculiarity that serves to distinguish or identify
  • Russian: отличи́тельная черта́ (otličítelʹnaja čertá) — peculiarity that serves to distinguish or identify
  • Turkish: huy — peculiarity that serves to distinguish or identify