他的吝啬到了连生日礼物都不愿意给家人买的地步。

His ___miserliness reached the point where he wouldn't even buy birthday gifts for family.

他的吝啬使他不愿为朋友的婚礼买一份像样的礼物。

His ___miserliness prevented him from buying a decent gift for his friend's wedding.