The sudden un-friend from someone he admired hurt more than he expected.

Her un-woke attitude at the meeting surprised her colleagues.

After their disagreement, she decided to un-friend him on social media.

Her essay's un-understandableness frustrated the reviewers, who asked her to clarify the main argument.

The un-understandability of the manual frustrated all the new employees.

The UN Security Council convened an emergency session to address the escalating border conflict.

At the pub, we spent the evening playing vingt-et-un.

That novel was utterly un-put-downable; I finished it in one sitting.

Her un-rock and roll haircut made her stand out among the die-hard fans.

The museum curator noted that several decorative motifs in the exhibit seemed un-Muslim-like, hinting at cross-cultural exchange.