Windy (adjective)

1. Having or characterized by wind.
2. Having a lot of wind.
3. Feeling chilly because of wind.
4. Difficult to predict or control because of unpredictable changes.

Origin:

Old english windig, of germanic origin; related to dutch and german windig, also to wind.

Examples:

1. It was a windy day and the flags were waving.
2. It was a windy night and the branches were swaying.
3. He felt windy and chilled as he walked to his car.
4. The stock market is always windy, you never know what will happen next.
5. The conversation was windy and difficult to follow.