yawn
Gähnen is a German verb that means to yawn. It is a reflexive action, often associated with tiredness or boredom. The word can also be used as a noun, as in 'ein Gähnen' (a yawn). It is pronounced as 'Gey-nen'.
I can't stop yawning because I am very tired.
This sentence is used to express extreme tiredness and fatigue, and the inability to stop yawning because of it. The verb 'gähnen' is used here in its infinitive form together with 'aufhören' in the sense of stopping or ceasing.
If you yawn, it means you need fresh air.
This sentence expresses the common belief that yawning (gähnen) indicates a lack of fresh air. It is typically used to suggest someone to go out and get some fresh air.
He has to yawn when he reads a boring book.
This sentence uses 'gähnen' to convey a reaction (in this case, yawning) to a boring activity, in this case reading a boring book. It is a way to express disinterest or lack of engagement in the activity.