Correct spelling for the English word "Daisey" is [dˈe͡ɪzɪ], [dˈeɪzɪ], [d_ˈeɪ_z_ɪ] (IPA phonetic alphabet).
The word "daisy" derives from the Old English word "dæġes ēaġe", which means "day's eye". This name was given to the flower because the daisy opens its petals during the day and closes them at night, resembling the image of the sun rising and setting. Over time, "dæġes ēaġe" gradually evolved into "daisy" as it was easier to pronounce and spell.