Grammar › N1 · 13 Limits and inclusion
〜ならまだしも: would be OK if; at least
N1 · 13 Limits and inclusion
Says one thing might be tolerable, but the worse case is not.
Noun/plain form + ならまだしも + worse case. The first clause is a milder situation. Spoken, a little complaining. Compare 〜ならいざ知らず, which stresses difference rather than degree.
Examples
一度ならまだしも、三度も同じミスをするとは困ったものだ。
Once might be forgivable, but making the same mistake three times is a real problem.
遅刻ならまだしも、無断欠勤は許されない。
Being late might be forgivable, but being absent without notice is not.