英汉解释

n. 成年人
adj. 已长成的

同义词

n. adult
a. adult，full-grown，fully grown，grown

反义词

n.   juvenile，juvenile person

参考例句

1. The child talks as if she were a grownup.
那孩子说话的样子好象她是个大人。
2. So, please remember: as a child lazy, a fool when grownup!
因此，各位请记住：小时是个懒孩子，长大是个大傻子！
3. Is Tyrus Thomas ready to behave (and play) like a grownup?
托马斯能够成熟的打球了吗？

英英解释

n.
  1. a fully developed person from maturity onward
  2. (of animals) fully developed

网络释义

grownup
大人; 成年;
Grownup Bread
大人面包;
Marrying their own grownup dreams
嫁人是她们成年后的梦想;