Synonyms of over the hill
over the hill (informal)
decrepitSomething that is decrepit is old and in bad condition. Someone who is decrepit is old and weak.
• a decrepit old man
senileIf old people become senile, they become confused, can no longer remember things, and are unable to look after themselves.
• a senile old man
Thesaurus for over the hill from the Collins English Thesaurus