It struck me as odd that anything would be just listed as “adjective” without specifying, so I looked these up. Some are obvious, others less so.
入り口 - の adjective
大した - pre-noun adjectival
古い - い adjective
悠々 - たる adjective
依然 - たる adjective
敢然 - たる adjective
I made a topic about たる adjectives
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