Younger vs. Youngest
Difference Between Younger and Youngest
(rare) One who is younger than another.
Most recently begun or formed.I may be the youngest in my family but I still resent being referred to as the baby.
younger brother or sister;little brother
(card games) Receiving dealt cards last, i.e. immediately before the next deal to the eldest.
used of the younger of two persons of the same name especially used to distinguish a son from his father;John JuniorJohn Smith, Jr.
The youngest child in a family, or individual in a group.