It means too old to be of use. Here are some sentences.
I can give you several sentences.
Antiquity(n): [In] ancient times
In antiquity, the Greeks had created myths to describe how things came to be.
The spinning wheel is an antiquated machine. (Antiquated means no longer used or old fashioned)
The class was studying about civilizations during antiquity in their Social Studies class.
I was mortified by the very thought of crossing over the chasm via that shaky, antiquated footbridge.
Anti
No. Antiquated is a word meaning "outdated", but there is not "quated".
The expression on her face was priceless. He used an antiquated expression to describe the book. The gift was an expression of love for his daughter.
old-fashioned
A good way to use retentive in a sentence is... "How do you use the word retentive in a sentence?"
use it by saying- how can you use the word ebullient in a sentence?
Can you use the word concluding in a sentence? Done.
How do you use the word gerontology in a sentence?
How can you use the word infectious in a sentence