seaway

noun

By · According to Wiktionary data (CC BY-SA) ·

"seaway" is a 6-letter English headword indexed on PlainSpell.

The verdict

“seaway” is uncommon English (frequency #51,381 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#51,381
frequency rank, English
54,294
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A lane or route at sea that is regularly used by ships; a sea lane or trade route.

Key facts for seaway
PropertyValue
Headwordseaway
LanguageEnglish
Part of speechNoun
Letters6
Frequency rank#51,381
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “seaway” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). seaway lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

seaway is uncommon English at frequency #51,381 among 54,294 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. 3 senses are on record.

We couldn't generate a plausible misspelling set for seaway, and the word's spelling is regular enough that our generator found nothing worth flagging. Our confusable-pair dataset has no match for it, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From Middle English seewey, from Old English sǣweġ (“a seaway, a path through the sea”), equivalent to sea + way. Compare Saterland Frisian Seegong (“seaway, swell”), German Seegang (“seaway, swell”). The correct English form is seaway, spelled S-E-A-W-A-Y.

Definition

  1. 1
    A lane or route at sea that is regularly used by ships; a sea lane or trade route.
  2. 2
    An inland waterway used by seagoing shipping.
  3. 3
    The headway of a vessel.

Etymology

From Middle English seewey, from Old English sǣweġ (“a seaway, a path through the sea”), equivalent to sea + way. Compare Saterland Frisian Seegong (“seaway, swell”), German Seegang (“seaway, swell”).

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "seaway"?
"seaway" is spelled S-E-A-W-A-Y.
What does "seaway" mean?
As a noun, "seaway" means: A lane or route at sea that is regularly used by ships; a sea lane or trade route.
What is the origin of the word "seaway"?
From Middle English seewey, from Old English sǣweġ (“a seaway, a path through the sea”), equivalent to sea + way. Compare Saterland Frisian Seegong (“seaway, swell”), German Seegang (“seaway, swell”). 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 “seaway”

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

  • The one correct English spelling is S-E-A-W-A-Y - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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