Monotone
/ˈmɒn.ə.təʊn/
Synonyms
- uniformity
- dullness
- flatness
- monochrome
- single-tone
Slang Meanings
A boring or uninteresting person or thing.
That lecture was totally monotone; I couldn't focus.
To lack excitement or enthusiasm.
His monotone vibe really brings down the energy in the room.