irreplaceable
ir-re-place-a-ble
adjective
Too unique or valuable to be substituted by anything else of equal worth.
"Her contribution to the project was truly irreplaceable."
Thesaurus
Synonyms: unreplaceable
Antonyms: replaceable
ir-re-place-a-ble
Too unique or valuable to be substituted by anything else of equal worth.
"Her contribution to the project was truly irreplaceable."
Synonyms: unreplaceable
Antonyms: replaceable