Definition of obmutescent in English:

obmutescent

Pronunciation /ˌɒbmjuːˈtɛsnt/

adjective

literary, rare
  • Speechless; remaining mute.

Origin

Late 18th century; earliest use found in Monthly Mirror. From classical Latin obmūtēscent-, obmūtēscēns, present participle of obmūtēscere to become dumb or mute from ob- + mūtēscere to grow mute from mūtus + -ēscere.