observatory

Name: observatory, English Word Data
Creator: Wiktionary
License: https://creativecommons.org/licenses/by-sa/4.0/

/əbˈzɜːvət(ə)ɹi/

//əbˈzɜːvət(ə)ɹi// noun

By PlainSpell · According to Wiktionary data (CC BY-SA) · analyzed September 3, 2026

The verdict

“observatory” has 17 generated spelling variants in the English index at frequency #11,080. The variants make it a useful spelling check.

#11,080
frequency rank, English: 1,431
“O” headwords: 17
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A place where stars, planets and other celestial bodies are observed, usually through a telescope; also place for observing meteorological or other natural phenomena.

Corpus desk

Index EN-observatory · observatory · English

observatory · rank #11,080 · 17 variants · 0 confusables

FREQ-MID #11,080
LEN-MEGA 11 letters
VOW-5 5 vowels
CONFUS-0 No pairs
VAR-HIGH 17 variants
BOOK-MID 1,431
PHOTO-FINISH oi

Nearest frequency peer: oi (+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.

ned

88,925
ninety

88,923
observatory

88,921
oi

88,920
outdoors

88,918
pcs

88,917

What this shows “observatory” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Key facts for observatory
Property	Value
Headword	observatory
Language	English
Part of speech	Noun
IPA	/əbˈzɜːvət(ə)ɹi/
Letters	11
Frequency rank	#11,080
Misspellings tracked	17
Confusable pairs	0
Source	Wiktionary (kaikki.org)

Frequency seat of misspelling magnet “observatory”

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

#11,080

#1#100#1K#10K#100K

← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “oi” (#11,081), “ninety” (#11,078), “outdoors” (#11,083). Among 1,431 “O” headwords, “observatory” is #11,080. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 17 spelling variants around observatory (IPA /əbˈzɜːvət(ə)ɹi/), anoun. Corpus frequency is #11,080 among 1,431 “O” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 17 likely wrong-spelling variants for observatory, with forms such as "boservatory", "obbservatory", and "obesrvatory". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: Borrowed from French observatoire. The correct English form is observatory, spelled O-B-S-E-R-V-A-T-O-R-Y.

Definition

1
A place where stars, planets and other celestial bodies are observed, usually through a telescope; also place for observing meteorological or other natural phenomena.
2
A lookout (vantage point with a view of the surrounding area)

Etymology

Borrowed from French observatoire.

Synonyms

observatorium

This word in other languages

observatorio(Español)observatoire(Français)Observatorium(Deutsch)observatório(Português)

Common misspellings

Also misspelled as:

boservatory
obbservatory
obesrvatory
obseravtory
obserrvatory
observaotry
observatorry
observatoryy
observatoyr
observatroy
observattory
observtaory
observvatory
obsevratory
obsrevatory
obsservatory
osbervatory

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of observatory - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

Edit distance from "observatory"

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 "observatory"?

"observatory" is spelled O-B-S-E-R-V-A-T-O-R-Y. The IPA pronunciation is /əbˈzɜːvət(ə)ɹi/.

What does "observatory" mean?

As a noun, "observatory" means: A place where stars, planets and other celestial bodies are observed, usually through a telescope; also place for observing meteorological or other natural phenomena.

What are common misspellings of "observatory"?

Common misspellings include "boservatory", "obbservatory", "obesrvatory", "obseravtory", "obserrvatory". The correct spelling is "observatory".

How do you pronounce "observatory"?

The IPA (International Phonetic Alphabet) transcription for "observatory" is /əbˈzɜːvət(ə)ɹi/. 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 "observatory"?

Borrowed from French observatoire. 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 "observatory", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

penetration#11,086 respectable#11,100 instability#11,051 impressions#11,046

Similar misspelling depth

Headwords with a similar count of attested misspellings (17 here; floor ≥5).

counterpart17 variants voluntarily17 variants dissertation17 variants downloading17 variants