The opposite could be "displeased." Other antonyms could be saddened, disappointed, dissatisfied, or upset.
displeased unsatisfied disappointed dissatisfied
Delight means happiness or joy. It means that one is pleased with something. To be delighted is the opposite of being disappointed or unhappy with something. It is usually used when describing a gift, such as being delighted with the new pair of socks.
more disappointed
Being unpopular.
The opposite could be "displeased." Other antonyms could be saddened, disappointed, dissatisfied, or upset.
displeased unsatisfied disappointed dissatisfied
Delight means happiness or joy. It means that one is pleased with something. To be delighted is the opposite of being disappointed or unhappy with something. It is usually used when describing a gift, such as being delighted with the new pair of socks.
despair, depression, gloom, down in the dumps, sad...
Rachel was as disappointed about losing the spelling bee as a pig without mud.
You could say that you are being "opposite of how other people are" on Opposite Day. If you say the opposite of an opposite, it is a true expression.
I would say opposite of disappointed would be proud. Typically when one is disappointed, its because of personal failure or because someone failed you. When you do something right, or succeed instead of failing, you are proud of yourself, or the person who has succeeded. Satisfied would also work in some cases.
The opposite is being a non-Mexican. Nationalities do not have antonyms.
The opposite of being befuddled is being able to think clearly
The opposite of being alert could be being unprepared, unaware, or inattentive.
Both "disappointed by" and "disappointed with" are correct structures. Use "disappointed by" when referring to the cause of disappointment, and "disappointed with" when referring to the person or thing that caused the disappointment.
The person was very disappointed when he did not get the lottery. It is an example sentence for disappointed.