English Dictionary

uncanny valley

名詞

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

日本語の意味

「不気味の谷現象」：ヒューマノイドなど、人間に似た外見や行動があるものが、微妙な違いによって不安感や嫌悪感、恐怖を引き起こす現象

When the humanoid robot smiled with almost human warmth, observers still hesitated, struck by the uncanny valley.

ヒューマノイド型ロボットがほとんど人間の温もりで微笑んだときでも、観客は不気味の谷を感じてためらった。

意味（1）

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

So in this case, the appearance is quite human like, but the familiarity is negative. This is the uncanny valley.