体質 たいしつ
taishitsu

Noun

1. constitution (physical); physical make-up; predisposition (to disease); disposition; tendency

わたくしのおいは たまご たいしてアレルギー体質 たいしつだ。
watashino oiwa tamagoni taishite arerugiitaishitsuda
My nephew is allergic to eggs.
Noun

2. character (of a group, organization, etc.); innate characteristics; make-up; nature; culture