1. trivial; minor; unimportant; insignificant
1. There are a few venial errors of spelling and punctuation in the draft of your paper, but in every other respect it is perfect.
2. Certainly he has offended me from time to time over the years, but the offenses were always of a venial kind.
venia (forgiveness, indulgence, pardon) (Latin)
ven + ial (ill) when child is ill, his mischievousness is forgiveable key word is menial. We forgive someone for menial mistakes.