Unfastidious and Unkempt

Unfastidious adjective - Marked by an absence of due or proper care or attention to detail; not concerned with cleanliness.

Unkempt and unfastidious are semantically related in dirty topic. In some cases you can use "Unkempt" instead an adjective "Unfastidious", when it comes to topics like messy, cluttered.

Unkempt adjective - Lacking in order, neatness, and often cleanliness.

Unfastidious and unkempt are semantically related in shabby topic. You can use "Unfastidious" instead an adjective "Unkempt".