incapable

Incapable means unable or lacking the ability to do something.

When we say someone is incapable of doing a task or activity, it usually means they don't have the skills, knowledge, or physical ability needed for it. This can apply to all sorts of things - like being able to play a musical instrument, ride a bike, or even having a good memory. It's not necessarily about being lazy or unwilling; it's just that some people might genuinely struggle with certain tasks because they lack the required abilities or talents.