Queasy (adjective)

1. Feeling sick to one's stomach.
2. Feeling uneasy or uncomfortable.

Origin:

Early 16th century (in the sense "easily upset"): from quease + -y.

Examples:

1. The smell of the fish made her feel queasy.
2. The roller coaster ride made him feel queasy.
3. The thought of eating the food made her feel queasy.
4. He felt queasy when he heard the news.
5. The motion of the boat made her feel queasy.