c. 1600, "cheating;" present participle adjective from amuse (v.). Sense of "interesting" is from 1712; that of "pleasantly entertaining, tickling to the fancy" is from 1826. Noted late 1920s as a vogue word. Amusive has been tried in all senses since 18c. and might be useful, but it never caught on. Related: Amusingly.
1. Do not hesitate to laugh at anything you find amusing.
2. The book is full of amusing sidelights on his family background.
3. He was witty, amusing and gifted with a sharp business brain.
4. The show is very amusing and the cast are very good.
5. They recounted amusing stories about their first sexual ex-periences.