little brother/sister

:  not big: such as

:  small in size or extent :  tiny

:  young

:  in only a small quantity or degree :  slightly

:  not at all

:  rarely, infrequently

:  a small amount, quantity, or degree

:  practically nothing

:  a short time

:  a male who has the same parents as another or one parent in common with another

:  one related to another by common ties or interests

:  one of a type similar to another

:  a female who has one or both parents in common with another

:  a member of a women's religious order (as of nuns or deaconesses)

:  one of a Roman Catholic congregation under simple vows