half-nibling

Half-sibling's child.

Half-nibling.

girlfriend

Woman in relation to the person she is dating.

Girlfriend.

grandmother-in-law

Spouse's grandmother.

grandmother-in-law.

half-aunt-in-law

1- Half-pibling's wife.
2- Spouse's half-aunt.

half-aunt-in-law.

great-great-grandaunt

Great-great-grandparent's sister.

great-great-grandaunt.

step-co-first-cousin-once-removed-in-law

Spouse's step-first-cousin-once-removed's spouse.

step-co-first-cousin-once-removed-in-law.

half-brother

Male that has one parent in common with another living being.

Half-brother.