orca

/ˈoɹkə/

//ˈoɹkə// noun

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

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

The verdict

“orca” sits in 20 confusable pairs (corpus #31,683) as a noun. The look-alike neighbours are the real trap.

#31,683
frequency rank, English
1,431
“O” headwords
4
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.

Corpus desk

Index EN-orca · orca · English

orca · rank #31,683 · 4 variants · 20 confusables

  • FREQ-MID #31,683
  • LEN-MID 4 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-LOW 4 variants
  • BOOK-MID 1,431
  • PHOTO-FINISH Oppenheimer

Nearest frequency peer: Oppenheimer (-1 rank slots)

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.

Frequency neighbours of confusable “orca”

Peers at similar corpus weight, separate from look-alike pairs below

corpus weight

What this shows Bars place “orca” against nearest ranked English headwords, not a reprint of the confusable-pair desk.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

orca vs ore
50% similar
orca vs org
50% similar
orca vs Orr
25% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for orca
PropertyValue
Headwordorca
LanguageEnglish
Part of speechNoun
IPA/ˈoɹkə/
Letters4
Frequency rank#31,683
Misspellings tracked4
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “orca”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).orcalands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “Oppenheimer” (#31,682), “Osage” (#31,684), “ophthalmology” (#31,681). Among 1,431 “O” headwords, “orca” is #31,683. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for orca is neighbouring look-alikes ("ore", "org", …), not just typos; it is anoun pronounced /ˈoɹkə/. Frequency #31,683 among 1,431 “O” headwords. Gloss: "A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.".

Our generated misspelling index lists 4 likely wrong-spelling variants for orca, with forms such as "orac", "orcca", and "orrca". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "ore", "org", "Orr", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: Learned borrowing from Latin orca (“tun, cask; whale”), see there for more. Although the origin is obscure, the sometimes-cited association with orcus (“underworld”) is folk-etymology. Doublet of orc. The correct English form is orca, spelled O-R-C-A.

Definition

  1. 1
    A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.

Recorded use

Wiktionary example

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

  1. In the summer, when the weather is calm and beautiful, large flocks of orcæ can be seen approaching the shallow places near the shore, or between the numerous islands of the White Sea. Several fishermen associate for hunting orcæ, each one furnishing a boat, and a large seine made of cords of the thickness of a finger, the meshes being 10½ inches square.

Etymology

Learned borrowing from Latin orca (“tun, cask; whale”), see there for more. Although the origin is obscure, the sometimes-cited association with orcus (“underworld”) is folk-etymology. Doublet of orc.

This word in other languages

orca(Español)épaulard(Français)Schwertwal(Deutsch)

Common misspellings

Also misspelled as:

  • orac
  • orcca
  • orrca
  • roca

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of orca - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

orac2orcca1orrca1roca2
Edit distance from "orca"

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 "orca"?
"orca" is spelled O-R-C-A. The IPA pronunciation is /ˈoɹkə/.
What does "orca" mean?
As a noun, "orca" means: A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.
What words are commonly confused with "orca"?
"orca" is commonly confused with "ore", "org", "Orr". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "orca"?
The IPA (International Phonetic Alphabet) transcription for "orca" is /ˈoɹkə/. 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 "orca"?
Learned borrowing from Latin orca (“tun, cask; whale”), see there for more. Although the origin is obscure, the sometimes-cited association with orcus (“underworld”) is folk-etymology. Doublet of orc. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "orca", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 4 letters (nearest by frequency rank).

pall#31,691nani#31,670mutt#31,665pips#31,705

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

Source: FrequencyWords open word-frequency list