"Stepsis" is a commonly used informal and abbreviated term for "stepsister." It is often used to refer to a sister who is not biologically related but is part of the same family due to a parent's remarriage or other similar circumstances.

While "stepsis" is a widely understood term in casual communication, it's important to note that in formal or professional writing, it's best to use the full and proper term "stepsister."

Example sentences

  1. My stepsister and I grew up together after our parents got married.
  2. Sarah's stepsister is really supportive and always helps her with schoolwork.
  3. Last weekend, I went shopping with my stepsister to buy a birthday gift for our mom.
  4. Jake and his stepsister have a strong bond, even though they didn't meet until they were teenagers.
  5. After their parents' divorce, Mark was excited to meet his new stepsister for the first time.
  6. Emily's stepsister is an amazing artist and often inspires her to be creative too.
  7. My stepsister and I have different tastes in music, but we still respect each other's preferences.
  8. It took some time for Alex and his stepsister to adjust to living under the same roof, but now they get along well.
  9. During the family reunion, we introduced our cousins to our stepsister, and they all hit it off instantly.
  10. When my stepsister and I were younger, we used to pretend we were secret agents on exciting missions.

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Reference:

stepsister
1. not your parents’ daughter, but the daughter of a person one of your parents…
Cambridge Dictionary