oker

noun

"oker" is a 4-letter English headword indexed on PlainSpell.

The verdict

“oker” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
4
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Interest on money; usury; increase.

Key facts for oker
PropertyValue
Headwordoker
LanguageEnglish
Part of speechNoun
Letters4
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “oker” sits in English frequency

oker 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.

Spelling & Dictionary Insight

The English entry for oker is 4 letters long, classified as a noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "Interest on money; usury; increase.".

No misspelling variants are generated for oker in our index, a sign its spelling follows regular English conventions. This entry stands alone in our confusable dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From Middle English oker, okur, okir, okyr, ocker, from Old Norse ókr (“usury”), from Proto-Germanic *wōkraz (“progeny, earnings, profit”), from Proto-Indo-European *h₂weg- (“to add, increase”). Cognate with Scots ocker (“usury”), Icelandic ókur (“usury”), … The correct English form is oker, spelled O-K-E-R.

Definition

  1. 1
    Interest on money; usury; increase.

Etymology

From Middle English oker, okur, okir, okyr, ocker, from Old Norse ókr (“usury”), from Proto-Germanic *wōkraz (“progeny, earnings, profit”), from Proto-Indo-European *h₂weg- (“to add, increase”). Cognate with Scots ocker (“usury”), Icelandic ókur (“usury”), Swedish ocker (“usury”), German Wucher (“usury”), Dutch woeker (“usury”), Old English wōcor (“increase, growth, fruit, usury”), Gothic 𐍅𐍉𐌺𐍂𐍃 (wōkrs, “interest, usury, tax”), Latin augere (“to increase”). More at eke, wax.

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 "oker"?
"oker" is spelled O-K-E-R.
What does "oker" mean?
As a noun, "oker" means: Interest on money; usury; increase.
What is the origin of the word "oker"?
From Middle English oker, okur, okir, okyr, ocker, from Old Norse ókr (“usury”), from Proto-Germanic *wōkraz (“progeny, earnings, profit”), from Proto-Indo-European *h₂weg- (“to add, increase”). Cognate with Scots ocker (“usury”), Icelandic ókur (... 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 “oker”

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

  • The one correct English spelling is O-K-E-R - 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 FrequencyWords open word-frequency list