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Incorrect; mistaken or misinformed; not aligned with reality. An allusion to baseball, in which baserunners are only "safe" if their foot is touching a "base." Hyphenated if used before a noun. Primarily heard in US. Your arguments would be compelling if your entire premise wasn't completely off base. You need to stop making these off-base assumptions about how the process works.
1. Lit. [of a runner in baseball] not having a foot touching the base. (*Typically: be ~; get ~.) The runner was off base but the first baseman didn't tag him out.
2. Fig. unrealistic; inexact; wrong. *Typically: be ~; get ~.) I'm afraid you're off base when you state that this problem will take care of itself. You're way off base if you think I was to blame!
Wrong, relying on a mistaken premise, as in His description of the accounting system was totally off base. This metaphoric term originated in baseball, where a runner who steps off a base can be put out. [c. 1940]
off basemainly AMERICAN
COMMON If someone's judgment or opinion is off base, it is mistaken or wrong. Note: In baseball, players have to hit the ball and then run round all four corners or bases to score a run. I don't think the church is off base at all in taking a moral stand on this. For him to blame his mother for this is really off base. Note: In baseball, if a player is caught off base, a member of the opposite team gets them out while they are between bases.
off basemistaken. North American informal
1947 Time Your Latin American department was off base in its comparison of the Portillo Hotel in Chile with our famous Sun Valley.
off ˈbase(American English, informal)
1 completely wrong about something: You’re way off base with that guess.
2 unprepared: The question caught her off base.
In baseball, a base is one of the four positions that a player must reach in order to score points.
way off (base)
mod. on the wrong track; completely wrong. (see also off base.) Sorry. You are way off. You should just give up.
Mistaken, incorrect, wrong. This term dates from the first half of the 1900s and alludes to baseball, where a runner whose foot is not touching a base may be put out. John Steinbeck used it in In Dubious Battle (1936): “If they can catch us off base, they’ll bounce us.”