Stepsibling

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
The child of one's stepparent by a previous relationship.
"With multiple stepparents, stepsiblings, half siblings and pseudosiblings, it’s a whole new type of family[…]."

Synonyms

Example

"With multiple stepparents, stepsiblings, half siblings and pseudosiblings, it’s a whole new type of family[…]."

Etymology

From step- + sibling.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.