Definition of unreplaceable in English:

unreplaceable

adjective

  • That cannot be replaced; irreplaceable.

Origin

Early 19th century; earliest use found in Robert Southey (1774–1843), poet and reviewer. From un- + replaceable.

Pronunciation

unreplaceable

/(ˌ)ʌnriːˈpleɪsəbl//(ˌ)ʌnrɪˈpleɪsəbl/