Collins COBUILD Advanced Learner's English Dictionary - unusual

Frequency: The word is one of the 3000 most common words in English. 1. If something is unusual, it does not happen very often or you do not see it or hear it very often. They have replanted many areas with rare and unusual plants... To be appreciated as a parent is quite unusual. ADJ 2. If you describe someone as unusual, you think that they are interesting and different from other people. He was an unusual man with great business talents. ADJ