tacit understanding; collusion; connection of thoughts
Refers to an unspoken mutual understanding or secret agreement between people, often with a nuance of scheming or collusion. Commonly used in the phrase 気脈を通じる (to be in secret communication).
See also: 気脈を通じる
They were advancing the plan through tacit understanding.
Rare term for blood vessel; the standard modern word is 血管 (けっかん). This sense is archaic or highly specialized.
See also: 血管
二人の間には何か気脈が通じているようだ。
It seems there is some kind of unspoken connection between the two.
In old medical texts, 気脈 can refer to blood vessels.
Composed of 気 (spirit, mind) and 脈 (vein, pulse). The original meaning likely referred to a connection of vital energy or blood vessels, later extended metaphorically to a mental or emotional connection between people. The derivation of the 'tacit understanding' sense is uncertain but may stem from the idea of a hidden channel of communication.