https://www.merriam-webster.com/dictionary/monotonous

Monotonous – Adjective

Definition: tediously uniform or unvarying

“Routine can get monotonous, especially if you drive every day in traffic and don’t have the option to take a different route to work.”

I came across this word while reading the article “HOW TO MAKE YOUR MORNING COMMUTE MORE FUN AND ENERGIZING” by Kate Harveston. I knew that Mono meant one but i couldn’t figure out exactly what tonous meant. I still can’t really see myself using this word.