open out

verb

"open-out" is a 7-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.

Corpus desk

Index EN-open-out · open out · English

open out · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "O" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for open out
PropertyValue
Headwordopen out
LanguageEnglish
Part of speechVerb
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “open out” in English

open outsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

open out is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. Gloss: "To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.".

No generated misspelling entries exist for open out in our index, a sign its spelling follows regular English conventions. This entry stands alone in our confusable dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

This entry carries no recorded etymology, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is open out, spelled O-P-E-N- -O-U-T.

Definition

  1. 1
    To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.

Recorded use

Wiktionary examples

These source excerpts show how open out appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Once though the station the deep-throated exhaust of G.C.R. engines, and particularly the "Directors", could be heard in ascending crescendo as the drivers opened out to take the gradient.
  2. To obtain the required overhead clearance at Stockport, it will be necessary to open out the Edgeley tunnels.

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 "open out"?
"open out" is spelled O-P-E-N- -O-U-T.
What does "open out" mean?
As a verb, "open out" means: To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.
What language does "open out" come from?
"open out" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

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

Source: FrequencyWords open word-frequency list