adj. phr. Not important to the thing being discussed; off the subject; not mattering. Perhaps you did stay up late finishing your homework. That's neither here nor there. You still must come to school on time. The boys all like the coach but that's neither here nor there; the question is, "Does he know how to teach football?"
Compare: BESIDE THE POINT.
Antonym: HAVE TO DO WITH, COME TO THE POINT.