Uncopyrightable are names, titles, slogans, and short phrases. Same with ideas. (Trademarks and patents may work for some of these.) Also uncopyrightable is something someone else wrote — unless they have explicitly made over ownership of the rights to you.

The fact that the word “uncopyrightable” is one of the two longest words in English which don’t repeat any letters is one of the side benefits of this video from Oxford Dictionaries blog about the longest one-syllable words in English.

If you don’t see a video here, click on the title of this post in order to view it in your browser.