monotone

باللغة العربية: نبرة رتيبة، رتابة

1. A single unvaried tone of speech or a sound. (countable, uncountable) · When Tima felt like her parents were treating her like a servant, she would speak in monotone and act as though she were a robot.
2. A piece of writing in one strain throughout. (countable, uncountable)

الجمع monotones