Bad / Old
dowdy - (of a person or their clothes) unfashionable and without style in appearance (typically used of a woman)
When Helen reached the age of 100, she didn't care that people thought that she dressed in a dowdy manner, she contented herself thinking about the wonderful family she had raised.
Senile - Used to describe behavior, mental states, or conditions associated with aging, especially when a person becomes forgetful or confused.

The elderly man showed symptoms of becoming senile, like forgetting where he put his keys, but with support, he managed to live independently for a while.