Phrase guide

uncanny valley

noun · 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

A range of appearances, mannerisms, or behaviors of a humanoid figure that are subtly different from a human and thereby cause feelings of discomfort, such as fear or revulsion.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Topics: computing, engineering, human-sciences, mathematics, mechanical-engineering, natural-sciences, physical-sciences, psychology, robotics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Digital or ambiguous physical spaces that create a sense of unease or eeriness due to deviations from familiar patterns that challenge perception and categorization, leading to discomfort. (e.g., liminal spaces, haunted houses, the Backrooms, etc.)

Definition source: English Wiktionary via Wiktextract

Usage: broadly, figuratively, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Calque of Japanese 不気味の谷 (bukimi no tani), from 不気味 (bukimi, “eerie, uncanny”, of Middle Chinese origin, literally “bad taste and smell”) + の (no, noun modifier particle) + 谷 (tani, “valley”). First used in 1970 by roboticist Masahiro Mori.

Across languages

Translations

25 source translations are retained for this English entry.

  • Arabic: وَادٍ غَرِيب (wādin ḡarīb) — subtle differences from human behavior that may cause negative reactions
  • Catalan: vall inquietant — subtle differences from human behavior that may cause negative reactions
  • Chinese Mandarin: 恐怖谷 (kǒngbùgǔ) — subtle differences from human behavior that may cause negative reactions
  • Finnish: outo laakso — subtle differences from human behavior that may cause negative reactions
  • French: vallée dérangeante — subtle differences from human behavior that may cause negative reactions
  • French: vallée de l’étrange — subtle differences from human behavior that may cause negative reactions
  • German: Uncanny Valley — subtle differences from human behavior that may cause negative reactions
  • German: Akzeptanzlücke — subtle differences from human behavior that may cause negative reactions
  • Greek: ἀνοίκειος συμπεριφορὰ (anoíkeios symperiforá) — subtle differences from human behavior that may cause negative reactions
  • Hebrew: עֵמֶק הַמוּזָרוּת (émek hamuzárut) — subtle differences from human behavior that may cause negative reactions
  • Hungarian: hátborzongató völgy — subtle differences from human behavior that may cause negative reactions
  • Italian: valle perturbante — subtle differences from human behavior that may cause negative reactions
  • Japanese: 不気味の谷 (bukimi no tani) — subtle differences from human behavior that may cause negative reactions
  • Korean: 불쾌한 골짜기 (bulkwaehan goljjagi) — subtle differences from human behavior that may cause negative reactions
  • Persian: دره وهمی — subtle differences from human behavior that may cause negative reactions
  • Polish: dolina niesamowitości — subtle differences from human behavior that may cause negative reactions
  • Portuguese: vale da estranheza — subtle differences from human behavior that may cause negative reactions
  • Russian: злове́щая доли́на (zlovéščaja dolína) — subtle differences from human behavior that may cause negative reactions
  • Spanish: valle inquietante — subtle differences from human behavior that may cause negative reactions
  • Spanish: valle espeluznante — subtle differences from human behavior that may cause negative reactions
  • Spanish: valle escalofriante — subtle differences from human behavior that may cause negative reactions
  • Swedish: kusliga dalen — subtle differences from human behavior that may cause negative reactions
  • Swedish: kuslighetens dal — subtle differences from human behavior that may cause negative reactions
  • Turkish: tekinsiz vadi — subtle differences from human behavior that may cause negative reactions
  • Ukrainian: мо́торошна доли́на (mótorošna dolýna) — subtle differences from human behavior that may cause negative reactions