deliverers is a form of:

Self-contained



adjective
1.
(complete in itself, keeping one's affairs to oneself, showing selfcontrol) ដែលមិនចូលចិត្ដចំណុះគេ, ដែលស្រគត់ស្រគំ, ដែលឯករាជ្យ
2.
(បច្ចេកទេស) ឯករាជ្យមិនទាក់ទង
  • self-contained office
    - បន្ទប់ដែលមានគ្រឿងបរិក្ខាគ្រប់គ្រាន់ហើយមានផ្លូវចូលដោយឡែក
ENGLISH MEANING
adjective
1.
Having self-control; reserved; uncommunicative; wholly engrossed in one's self.
2.
Having all the essential working parts connected by a bedplate or framework, or contained in a case, etc., so that mutual relations of the parts do not depend upon fastening outside of the machine itself.