grandfatherly

详细解释:a. 老祖父的, 慈祥的, 老祖父似的

详细解释：

grand.fa.ther.ly

adj.（形容词）
Characteristic of or befitting a grandfather.
有老祖父特征的或适宜于老祖父的
Having the qualities of a grandfather.
有老祖父品质的