Verb (dictionary form) + べからざる + Noun

[Must not; indispensable; that cannot be (done)]

Connection: Verb (dictionary form) + べからざる + Noun

Usage: The attributive (noun-modifying) form of べからず. Used before a noun to describe something that must not be done or something indispensable. Very formal and literary. Most commonly seen in the fixed expression 欠くべからざる (indispensable).

Common expressions:

• 欠くべからざる存在 (an indispensable existence)
• 許すべからざる行為 (an unforgivable act)
• 犯すべからざる権利 (an inviolable right)

Examples:

彼はこのチームに欠くべからざる存在だ。(He is an indispensable member of this team.)

それは許すべからざる行為である。(That is an unforgivable act.)

言論の自由は犯すべからざる権利だ。(Freedom of speech is an inviolable right.)