semi-automatic

adj

"semi-automatic" is a 13-letter English headword indexed on PlainSpell.

The verdict

“semi-automatic” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Partially automatic.

Key facts for semi-automatic
PropertyValue
Headwordsemi-automatic
LanguageEnglish
Part of speechAdjective
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “semi-automatic” sits in English frequency

semi-automatic 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

semi-automatic is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.

We couldn't generate a plausible misspelling set for semi-automatic, typically a sign the spelling maps closely to how the word sounds. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From semi- + automatic. The correct English form is semi-automatic, spelled S-E-M-I---A-U-T-O-M-A-T-I-C.

Definition

  1. 1
    Partially automatic.
  2. 2
    Of a firearm that automatically ejects a shell and loads the next one, but requires the trigger to be squeezed for each shot; autoloading.

Etymology

From semi- + automatic.

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 "semi-automatic"?
"semi-automatic" is spelled S-E-M-I---A-U-T-O-M-A-T-I-C.
What does "semi-automatic" mean?
As an adjective, "semi-automatic" means: Partially automatic.
What is the origin of the word "semi-automatic"?
From semi- + automatic. 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 “semi-automatic”

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

  • The one correct English spelling is S-E-M-I---A-U-T-O-M-A-T-I-C - every other letter order is a misspelling in standard orthography.
  • 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