〜ないものでもない

Meaning

This is a roundabout, hedging expression. It uses a double negative to indicate that given a certain condition, the following outcome is possible — though with reluctance or reservation. It has the same meaning as 「…なくもない」.

Formation

Examples

1. 貴方が全額負担してくれるのであれば、一緒に行ってあげないものでもない。
   If you cover all the expenses, it's not that I couldn't go with you.

2. A:期日を過ぎたら、書類は受け付けてもらえないのですか。B:正当な理由があれば許可しないものでもないですが、原則としては認めません。
   A: Once the deadline has passed, will you no longer accept documents? B: If there is a legitimate reason, it's not that we couldn't allow it, but as a rule, we do not.

3. 妹の勉強を飼いたいという気持ちもわからないものでもないが、アレルギー体質の母が辛いだろう。
   It's not that I can't understand my sister's desire to have a pet, but it would be hard on our mother who has allergies.

4. この条件は、彼女が愛ないで生まれればニ日で終わらないものでもないが、それは酷だろう。
   Under these conditions, if she worked without sleeping it's not that she couldn't finish in two days, but that would be too cruel.

Summary

• 「〜ないものでもない」means "it's not that ~ can't; it's not impossible to ~"
• Attaches to verbs (ない-form)