Translation guide
For the exercise machine, use トレッドミル or ランニングマシン. For the figurative meaning of monotonous routine, use 単調な繰り返し or similar expressions.
Referring to the piece of gym equipment for walking or running in place.
The most common and direct loanword for 'treadmill'. Widely understood in fitness contexts.
Describing a repetitive, boring, or unending task or lifestyle, often with a negative connotation.
I used the treadmill at the gym.
Another common term, literally 'running machine'. Often used interchangeably with トレッドミル.
I bought a new treadmill.
A less common term, sometimes used for home treadmills. May be understood but not as standard.
I have a treadmill at home.
Every day is a treadmill of monotony.
Means 'repetition of the same thing'. Common and easily understood.
Work is a treadmill of the same tasks; I get bored.
Literally 'endless routine'. Conveys the feeling of being stuck on a treadmill.
I want to escape this treadmill of endless routine.