noun, na-adjective
ecstasy; rapture; seventh heaven
Describes a state of being overjoyed or carried away with happiness, often to the point of losing composure. Commonly used as 有頂天になる.
彼は試験に合格して有頂天になっている。
He is ecstatic after passing the exam.
有
I was so overjoyed that I lost sight of my surroundings.
noun
highest heaven (Buddhism)
Original Buddhist meaning: the highest realm of existence in the formless world. Rare outside religious contexts.
仏教では、有頂天は三界の最上位とされる。
In Buddhism, the highest heaven is considered the top of the three realms.