心不在焉

The physical heart; the mind or intellect; feelings or emotions; the center or core of something; intention or will.

Function word; no; not; un-; negative prefix; used to form questions or emphasize a statement; sometimes used for rhythm.

To exist; to be located at or in a place; to be in the process of doing something; to depend on; to observe.

A function word; indicates place, like 'there' or 'here'; asks 'where', 'how', or 'why'; connects clauses to show consequence; functions like 'then' or 'thus'.