1. not having been read
2. lacking in education or knowledge from reading; not well-read

Examples

• She had dozens of unread books stacked on her nightstand.
• The email remained unread in his inbox for weeks.
• Despite his wealth, he was surprisingly unread and couldn’t discuss literature.
• The unread newspaper lay folded on the kitchen table.
• Her unread messages kept piling up while she was on vacation.
• He felt embarrassed about being so unread compared to his classmates.
• The library returned all unread books to the shelves.