Indispensable

1.

~ (to somebody / something), ~ (for something doing something) (inviolable, that cannot be dispensed with absolutely necessary) ដែលខានមិនបាន, ពុំរួច, ដែលជាកាតព្វកិច្ច, ដែលបង្ខំ
Example: Machinery is indispensable in industry.
Example: Air, food and water are indispensable to life.

2.

(បច្ចេកទេស) សំខាន់ណាស់, ចាំបាច់ខានមិនបាន

• Indispensable evidence
  - ភស្តុតាងខានមិនបាន, ភស្តុតាងចាំបាច់
• indispensable party
  - ភាគីខានមិន. ភាគីចាំបាច់
  - ភាគីខានមិនបាន, ភាគីចាំបាច់

1.

Not dispensable; impossible to be omitted, remitted, or spared; absolutely necessary or requisite.

2.

Not admitting dispensation; not subject to release or exemption.

1.

basic, essential, fundamental, imperative, important, intrinsic, necessary needed, required, requisite, vital

1.

expendable, extrinsic, optional, peripheral

1.

Unavoidable, inevitable