na-adjective
Describes a person, atmosphere, or thing that has a soft, romantic, or pleasantly vague quality, similar to the English 'dreamy'. Often used in fashion, music, and casual description.
彼女のドレスはとてもドリーミーだった。
Her dress was very dreamy.
この曲はドリーミーな雰囲気がある。
This song has a dreamy atmosphere.