Definition of "er" in English

interjection

1. (informal) Said when hesitating in speech.

verb

1. (informal, transitive, intransitive) To utter the word er when hesitating in speech.

   • um and er
   • He ummed and erred his way through the presentation.

noun

1. An occurrence of the interjection "er".

noun

1. The name of the Cyrillic script letter Р / р.