Word parts change

ir- + reversible

Pronunciation change

  • (UK) IPA (key): /ˌɪr.ɪˈvɜː.sə.bəl/
  • (US) IPA (key): /ˌɪr.ɪˈvɝ.sə.bəl/
  • (file)

Adjective change

Positive
irreversible

Comparative
none

Superlative
none

  1. If something is irreversible, you cannot reverse it.
  2. (physics) If something is irreversible, it cannot return to how it once was.
  3. (thermodynamics) If something is irreversible, it cannot return how it once was without using free energy or increasing entropy.

Antonyms change