so lost in thought that one does not realize what one is doing, what is happening, etc.; preoccupied to the extent of being unaware of one's immediate surroundings.
Synonyms withdrawn, musing, daydreaming, dreamy, forgetful, distracted. Absent-minded,abstracted,oblivious all mean inattentive to immediate surroundings. Absent-minded suggests an unintentional wandering of the mind from the present: an absent-minded committee member. Abstracted implies that the mind has been drawn away from the immediate present by reflection upon some engrossing subject: an abstracted air. Oblivious implies absorption in some thought that causes one to be completely forgetful of or unaware of one's surroundings: oblivious of danger.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a chattering or flighty, light-headed person.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.