stuffiness

noun
UK /ˈstʌfinəs/
US /ˈstʌfinəs/

Stuffiness is when the air feels hot and hard to breathe because it is not fresh.

The stuffiness in the classroom made everyone sleepy.


OTHER MEANINGS

2. A blocked or full feeling in your nose when you have a cold.

The stuffiness in my nose made it hard to smell dinner.

3. A formal, stiff way of behaving that seems too serious.

The stuffiness of the old club made the children feel unwelcome.

4. A feeling of being too full or uncomfortable inside.

He felt a stuffiness in his chest after eating too fast.