irreplaceable

UK: /ˌɪrɪˈpleɪsəb^əl/ US: /ˌɪrɪˈpleɪsəbəl/ ,(ir′i plā′sə bəl)

WordReference Random House Learner's Dictionary of American English © 2026

ir•re•place•a•ble /ˌɪrɪˈpleɪsəbəl/   adj. 

1. that cannot be replaced;
   unique:
   an irreplaceable vase.

WordReference Random House Unabridged Dictionary of American English © 2026

ir•re•place•a•ble  (ir′i plā′sə bəl), adj. 

1. incapable of being replaced;
   unique:
   an irreplaceable vase.

• ir-² + replaceable 1800–10

ir′re•place′a•bly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::

irreplaceable / ˌɪrɪˈpleɪsəb^əl/ adjective

1. not able to be replaced: an irreplaceable antique

ˌirreˈplaceably adverb