devious mind; sinister thinking; scheming
Idiomatic expression describing a calculating, untrustworthy, or scheming mindset. Often used in literary or dramatic contexts.
No one can match his devious mind.
Politicians with sinister thinking cannot be trusted.
機械の心 is a noun phrase describing a scheming nature, while 腹黒い is an adjective meaning 'black-hearted' or 'malicious'.
陰謀 refers to a concrete plot or conspiracy, whereas 機械の心 describes a general disposition toward scheming.
Standard kanji spelling for this idiomatic expression.
Alternate kanji spelling using 之; less common and somewhat literary.
A rendering of 機心, the calculating or contriving mind discussed in the Chinese classic 『荘子』, where reliance on contrivances is associated with a scheming disposition.