also granddad, 1793, from grand- + dad. Grand dada attested from 1690s. Grandaddy is attested from 1751; figuratively (in grandaddy of all _____) from 1898.
权威例句
1. My grandad is 85.
我爷爷85岁了。
2. Grandad looks absolutely ludicrous in old sunhat.
外公戴着一顶老式遮阳帽显得滑稽可笑.
3. " Two will be enough for grandad, the rest are yours. "