the.com/exception

means A case that doesn't follow the usual rule, often set aside and excused from it.

from From Latin exceptio, 'a taking out,' built from ex- ('out') plus capere ('to take, seize') — the same capere that gives us 'capture' and 'captive.' The legal sense came first: in Roman law, an exceptio was a defendant's formal objection, a clause taking a particular case out of the general rule. English borrowed the word in that spirit around the 14th century, and the everyday sense — the thing that doesn't fit the pattern — simply took the 'taking out' literally.