What does "venial" mean?

Venial: Allowed; permitted. [Obs.] "Permitting him the while venial discourse unblamed." Milton. Venial sin (R. C. Theol.), a sin which weakens, but does not wholly destroy, sanctifying grace, as do mortal, or deadly, sins. -- Ve"ni*al*ly, adv. -- Ve"ni*al*ness, n. Bp. Hall.

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