Humid (adjective)

1. Containing a high amount of water vapor.
2. Marked by a relatively high level of water vapor in the air.
3. Causing or characterized by discomfort from excess heat and moisture.

Origin:

From latin humidus, from humere ("to be moist"). first recorded in english in the 16th century.

Examples:

1. The air was very humid today.
2. The humid climate made it hard to breathe.
3. The humid atmosphere caused the paint to dry slowly.
4. The humid weather made my hair frizzy.
5. The humid air made it difficult to sleep.