happyI'm much happier in my new job.
cheerfulShe's always very cheerful.
in a good moodYou're in a good mood this morning!
gladI was so glad to see her.
delightedThey are delighted with their new car.
ecstaticThe new president was greeted by an ecstatic crowd.
elatedWe were elated at the news.
on cloud nineinformalI was on cloud nine after being offered the job.
contentedShe's a very contented little baby.