speechless
Pronunciation:
/ˈspiːtʃ.lɪs/adjective
Definitions
Not speaking; not knowing what to say; silent, especially due to surprise, amazement, etc.
Example: When he walked into his surprise birthday party, he was completely speechless.
adjective
Definitions
Incapable of being spoken or uttered
Synonyms:ineffableinexpressibleunutterableUnfit or not permitted to be spoken or described.
Extremely bad or objectionable.
Example: an unspeakable fool