bù kě
May not, can not: unpermissible, for-bidden; unable. Buke, the name of a monk of the 靈妙寺 Ling Miao monastery in the Tang dynasty, a disciple of Subha-karāṣimha, and one of the founders of 真言 Shingon.
cannot; should not; must not; forbidden; prohibited
improbable