What family member is this ?

What is a person that shares the same mother but have a different father 

Foofa2021-03-18T22:34:41Z

A half sibling.

T J2021-03-15T20:59:37Z

They are your step bro/sis.

Ivan2021-03-15T18:58:30Z

They are half siblings

dewcoons2021-03-15T18:38:44Z

Half-sibling.          

GF2021-03-15T18:38:41Z

No family relationship, so sex is ok