The word "slumberous" in English means: Giving a feeling of sleepiness; causing or associated with sleep., Quiet and peaceful, as if in a state of sleep; lacking activity or excitement..
The phonetic transcription of "slumberous" is /ˈslʌmbərəs/ in British English and /ˈslʌmbərəs/ in American English. Click the 🔊 button to hear both pronunciations.