stepsister

As a letter s

is the letter s with a.

As a noun stepsister is

the daughter of one's stepfather or stepmother who is not the daughter of one's mother and is not the daughter of one's father.

As nouns the difference between stepsister and null

is that stepsister is the daughter of one's stepfather or stepmother who is not the daughter of one's mother and is not the daughter of one's father while null is zero, nil; the cardinal number before einn.

As nouns the difference between stepsister and stepcousin

is that stepsister is the daughter of one's stepfather or stepmother who is not the daughter of one's mother and is not the daughter of one's father while stepcousin is child or stepchild of someone's step-aunt, step-uncle, aunt or uncle.

As nouns the difference between stepsister and babysitter

is that stepsister is the daughter of one's stepfather or stepmother who is not the daughter of one's mother and is not the daughter of one's father while babysitter is babysitter.

As nouns the difference between taxonomy and stepsister

is that taxonomy is the science or the technique used to make a classification while stepsister is the daughter of one's stepfather or stepmother who is not the daughter of one's mother and is not the daughter of one's father.

Stepsibling is a hyponym of stepsister.

As nouns the difference between stepsister and stepsibling

is that stepsister is the daughter of one's stepfather or stepmother who is not the daughter of one's mother and is not the daughter of one's father while stepsibling is the child of one's stepfather or stepmother from another relationship; a stepbrother or stepsister.