off base prepositional phrase4 •(figurative) Mistaken; misguided; somewhat wrong in opinion or judgment.But he's off-base in describing the city as having "record crime" until he took office. — 2007 •(figurative) Incorrect or inappropriate; not properly executed, envisioned, or understood.That partisan rhetoric may be heated, but it's not entirely off base. — 2010 •Situated or happening outside the boundaries of a military base.A Virginia lawmaker wants to improve off-base living conditions for enlisted troops with families. — 2009 •Positioned somewhere between the bases, and hence vulnerable to being caught out.The hippo heard us, and, like a baseball player caught off base, tried to get back to the river. — 1907 formsmore off-base · most off-base