Joyful is an adjective that expresses feeling, so use it to describe anything that's happy. It's used most conventionally for people, but you can apply it to other things.
"Today I was joyful because I won the 800 meter race"
"A joyful atmosphere bubbled on the quad as the seniors flung their papers into the air"
Yes, especially if it's a one word sentence in answer to the question, "How are you feeling?"
No such word in English. Use "joyful".
i am joyful to have a brother named harlan.
Surprisingly, many people are sad or stressed during the holidays rather than joyful.
radiated
I'm so joyful that today's my Birth-Day
I glanced at the ice cream , joyful, as I gobbled it down :D
Yes, especially if it's a one word sentence in answer to the question, "How are you feeling?"
Lynn was joyful when she discovered that she had won free concert tickets.
For example: "I love it!" she said joyfully. Or: She acted joyful, but inside she actually wasn't.
No such word in English. Use "joyful".
There are quite a few sentences you can make with a pair of synonyms. Rather than use the same word repeatedly in a sentence or paragraphs.
The joyful and spirited girl skipped across the garden.
The scent of the beautiful flower evoked joyful memory of her life.
i am joyful to have a brother named harlan.
I'm very joyful as it was the last day of school.
No. You would say "Imagine you are joyful."