Step Cousin 

your cousin.....not blood but related to you through your step parent.

my step dads sister is my step aunt. her kids are my step cousins.

Step Cousin by Amy_D May 9, 2005

Step Cousin 

The half sibling(mother or fathers side) of your half sibling (mother or father side)

My Brother and I have different dads. I call his sister on his dad's side my step cousin

Step Cousin by [e-mail] October 7, 2022

step-cousin-aunt 

1. The daughter of one's grandparent's stepsibling.
2. The stepdaughter of one's grandparent's sibling.
3. The daughter of one's stepgrandparent's sibling.

My step-cousin-aunt is a good person.

step-cousin-aunt by Elivaldeq November 24, 2019

step-cousin-uncle 

1. The son of one's grandparent's stepsibling.
2. The stepson of one's grandparent's sibling.
3. The son of one's stepgrandparent's sibling.

My step-cousin-uncle is a good person.

step-cousin-uncle by Elivaldeq November 24, 2019

step-cousin-niece

1. The granddaughter of one's parent's stepsibling.
2. The stepgranddaughter of one's parent's sibling.
3. The granddaughter of one's stepparent's sibling.

My step-cousin-niece is a good person.

step-cousin-niece by Elivaldeq November 24, 2019

step-cousin-pibling 

1. The child of one's grandparent's stepsibling.
2. The stepchild of one's grandparent's sibling.
3. The child of one's stepgrandparent's sibling.

My step-cousin-pibling is a good person.

step-cousin-pibling by Elivaldeq November 24, 2019

step-cousin-nephew

1. The grandson of one's parent's stepsibling.
2. The stepgrandson of one's parent's sibling.
3. The grandson of one's stepparent's sibling.

My step-cousin-nephew is a good person.

step-cousin-nephew by Elivaldeq November 24, 2019