adj. phr. , informal Far from the right answer; wrong; astray. Johnny tried to answer the teacher's question but he was way out in left field. Susan tried to guess what the surprise was but she was way out in left field. 2. Speaking or acting very queerly; crazy. The girl next door was always queer, but after her father died, she was really out in left field and had to go to a hospital.
Compare: OUT OF ONE'S HEAD.