It's an adjective.
I feel happy when I spend time with my friends and family.
Why is it that you are not happy to do your own home work
What kind of sentence? The kind of sentence in which the word kind is being used. Oh, thank you. That was very kind.
i was so happy when i received my Christmas present
I am not happy nor am I unhappy.
"Sad is an antonym for the word happy."
He was happy, while on the otherhand she was unhappy. This is a sentence using the word on the otherhand.
Happy is the correct spelling.An example sentence is "Wendy was very happy with her new dress".
He is a kind person.
Clair was happy that her children were bonding.
I am happy with the trophy I earned.
I am happy.