roo

/ˈɹuː/

//ˈɹuː// noun

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

"roo" is a 3-letter English headword indexed on PlainSpell.

The verdict

“roo” sits in 20 confusable pairs (corpus #25,557) as a noun. The look-alike neighbours are the real trap.

#25,557
frequency rank, English
3,094
“R” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Peace; quietness.

Corpus desk

Index EN-roo · roo · English

roo · rank #25,557 · 0 variants · 20 confusables

  • FREQ-MID #25,557
  • LEN-MID 3 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 3,094
  • PHOTO-FINISH rook

Nearest frequency peer: rook (+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 “roo”

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

corpus weight

What this shows Bars place “roo” 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).

roo vs RS
0% similar
roo vs RT
0% similar
roo vs RP
0% similar

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

Key facts for roo
PropertyValue
Headwordroo
LanguageEnglish
Part of speechNoun
IPA/ˈɹuː/
Letters3
Frequency rank#25,557
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “roo”

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

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “rook” (#25,558), “Riyadh” (#25,555), “rouse” (#25,559). Among 3,094 “R” headwords, “roo” is #25,557. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for roo is neighbouring look-alikes ("RS", "RT", …), not just typos; it is anoun pronounced /ˈɹuː/. Frequency #25,557 among 3,094 “R” headwords. 2 recorded senses keep meaning in play.

Zero misspellings are on record for roo in our index, a straightforward case of a spelling with little room for common typos. It also participates in 20 confusable-pair relationships, "RS", "RT", "RP", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English roo, ro, from Old English rō, rōw (“quietness, quiet, rest”), from Proto-Germanic *rōō (“quiet, rest”), from Proto-Indo-European *h₁reh₁- (“to rest; quiet”). Cognate with Scots ro, ruve (“peace, repose”), German Ruhe (“rest, peace, tranq… The correct English form is roo, spelled R-O-O.

Definition

  1. 1
    Peace; quietness.
  2. 2
    Rest; stillness.

Etymology

From Middle English roo, ro, from Old English rō, rōw (“quietness, quiet, rest”), from Proto-Germanic *rōō (“quiet, rest”), from Proto-Indo-European *h₁reh₁- (“to rest; quiet”). Cognate with Scots ro, ruve (“peace, repose”), German Ruhe (“rest, peace, tranquility”), Danish, Norwegian and Swedish ro (“rest, peace, tranquility”), Icelandic ró (“tranquility, quietness”).

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 "roo"?
"roo" is spelled R-O-O. The IPA pronunciation is /ˈɹuː/.
What does "roo" mean?
As a noun, "roo" means: Peace; quietness.
What words are commonly confused with "roo"?
"roo" is commonly confused with "RS", "RT", "RP". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "roo"?
The IPA (International Phonetic Alphabet) transcription for "roo" is /ˈɹuː/. 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 "roo"?
From Middle English roo, ro, from Old English rō, rōw (“quietness, quiet, rest”), from Proto-Germanic *rōō (“quiet, rest”), from Proto-Indo-European *h₁reh₁- (“to rest; quiet”). Cognate with Scots ro, ruve (“peace, repose”), German Ruhe (“rest, pe... 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 "roo", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

PPG#25,537pao#25,514Syd#25,605nia#25,497

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

Source: FrequencyWords open word-frequency list