half sister

/ˈhæf sɪstɚ/

//ˈhæf sɪstɚ// noun

"half-sister" is a 10-letter English headword indexed on PlainSpell.

The verdict

“half sister” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A female sibling sharing a single parent.

Key facts for half sister
PropertyValue
Headwordhalf sister
LanguageEnglish
Part of speechNoun
IPA/ˈhæf sɪstɚ/
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “half sister” sits in English frequency

half sister falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

half sister is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈhæf sɪstɚ/. Rarity is why readers land here mid-draft. 2 senses are on record.

We couldn't generate a plausible misspelling set for half sister, a straightforward case of a spelling with little room for common typos. This headword has no recorded confusable partner, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Middle English halfesister, half-suster, half sister, equivalent to half- + sister. Compare Dutch halfzus, halfzuster (“half-sister”), German Halbschwester (“half-sister”), Swedish halvsyster (“half-sister”), Icelandic hálfsystir (“half-sister”). The correct English form is half sister, spelled H-A-L-F- -S-I-S-T-E-R.

Definition

  1. 1
    A female sibling sharing a single parent.
  2. 2
    A female half sibling (same dam, different sires).

Etymology

From Middle English halfesister, half-suster, half sister, equivalent to half- + sister. Compare Dutch halfzus, halfzuster (“half-sister”), German Halbschwester (“half-sister”), Swedish halvsyster (“half-sister”), Icelandic hálfsystir (“half-sister”).

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "half sister"?
"half sister" is spelled H-A-L-F- -S-I-S-T-E-R. The IPA pronunciation is /ˈhæf sɪstɚ/.
What does "half sister" mean?
As a noun, "half sister" means: A female sibling sharing a single parent.
How do you pronounce "half sister"?
The IPA (International Phonetic Alphabet) transcription for "half sister" is /ˈhæf sɪstɚ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "half sister"?
From Middle English halfesister, half-suster, half sister, equivalent to half- + sister. Compare Dutch halfzus, halfzuster (“half-sister”), German Halbschwester (“half-sister”), Swedish halvsyster (“half-sister”), Icelandic hálfsystir (“half-siste... See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “half sister”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is H-A-L-F- -S-I-S-T-E-R - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈhæf sɪstɚ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list