Definition
If something is 'unnoticeable,' it's difficult or impossible to see or perceive. It's so subtle or insignificant that it escapes attention. Think of a tiny scratch on a car or a faint stain on a shirt. Unlike something that's glaringly obvious, 'unnoticeable' things blend into the background. An unnoticeable change is so gradual you hardly realize it's happening. A skilled actor can make their transitions between scenes almost unnoticeable. It's a word for things that fade into obscurity.