noun
disposition; temperament; feel
Refers to a person's inherent nature, character, or the general atmosphere they give off. Often used in expressions like 肌合いが合う (to get along well) or 肌合いが違う (to be of a different stripe).
彼とは肌合いが合うので、一緒に仕事がしやすい。
I get along well with him, so it's easy to work together.
都会と田舎では、人々の肌合いが違うように感じる。
I feel that people's temperaments differ between the city and the countryside.
Compound of 肌 (はだ, 'skin') and 合い (あい, 'fit, compatibility'), literally 'skin fit', suggesting an intuitive, tactile sense of compatibility or character.