- superl. of young.
- a person who is the least old of a group, as the youngest member of a family: Their youngest is still in high school.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for youngests
They have got two children, Pip, the eldest is called, and the youngests name is Rags.Bliss, and Other Stories