Fucking is a vulgar slang term that can be used as an adjective, adverb, or intensifier in English.
Common usages include:
1. As an intensifier: "That's fucking amazing!"
2. As an adjective: "I hate this fucking weather"
3. As an adverb: "You're fucking kidding me!"
4. Literal meaning: Referring to sexual intercourse
5. As an expletive: "Fucking hell!"