Here's a breakdown of its functions:
1. Describing a person or thing:
* "The child was happy with his new toy." (Describes the child's emotional state)
* "The sun is shining and the birds are singing, what a happy day!" (Describes the day's atmosphere)
2. Expressing a feeling:
* "I am so happy to see you!" (Directly expresses the speaker's feeling)
* "She was happy about the promotion." (Indicates a feeling of satisfaction)
3. Forming other words:
* "Happiness" (Noun: the state of being happy)
* "Happily" (Adverb: in a happy way)
* "Unhappy" (Adjective: the opposite of happy)
In essence, "happy" is a word that paints a positive emotional picture, whether it's describing a person, thing, or feeling.