1814, shortening of grandpappa (1753), childish or familiar form of grandfather (see grand- + pa). Grandpappa is recorded from 1753, grandpop from 1860, grandpappy from 1853.
权威例句
1. Grandpa lies comatose on the sofa.
爷爷躺在沙发上,睡得很沉。
2. Grandpa was not yet back from the war.
爷爷当时还没有从战场归来。
3. Tell Grandpa the good news so that he can share our joy.
快把这消息告诉你爷爷,叫他老人家也高兴高兴.
4. The " d " in " grandpa " has been lost by assimilation to " p ".