simultaneously
/ˌsɪmlˈteɪnɪəsli/
"simultaneously" is a 14-letter English headword indexed on PlainSpell.
The verdict
“simultaneously” is a regularly-used English word, ranked #5,454 in English word frequency and used as an adverb.
- #5,454
- frequency rank, English
- 14
- letters
- 21
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Occurring at the same time.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | simultaneously |
| Language | English |
| Part of speech | Adverb |
| IPA | /ˌsɪmlˈteɪnɪəsli/ |
| Letters | 14 |
| Frequency rank | #5,454 |
| Misspellings tracked | 21 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Where “simultaneously” sits in English frequency
Spelling & Dictionary Insight
The English entry for simultaneously is 14 letters long, classified as an adverb, and transcribed in the International Phonetic Alphabet as /ˌsɪmlˈteɪnɪəsli/. Corpus data places it at rank #5,454 in overall English word frequency, indicating it appears regularly in written and spoken text. The dominant gloss from Wiktionary reads: "Occurring at the same time.".
Our generated misspelling index lists 21 likely wrong-spelling variants for simultaneously, with forms such as "ismultaneously", "simlutaneously", and "simmultaneously". 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. It also participates in 1 confusable-pair relationship, "simultaneous", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From simultaneous + -ly. The correct English form is simultaneously, spelled S-I-M-U-L-T-A-N-E-O-U-S-L-Y.
Definition
- 1Occurring at the same time.
Etymology
From simultaneous + -ly.
Synonyms
This word in other languages
Common misspellings
Also misspelled as: ismultaneously,simlutaneously,simmultaneously,simulatneously,simulltaneously,simultaenously,simultaneosuly,simultaneoulsy,simultaneouslly,simultaneouslyy,simultaneoussly,simultaneousyl,simultaneuosly,simultanneously,simultanoeusly,simultnaeously,simulttaneously,simutlaneously,siumltaneously,smiultaneously,ssimultaneously
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of simultaneously - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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 "simultaneously"?
What does "simultaneously" mean?
What words are commonly confused with "simultaneously"?
How do you pronounce "simultaneously"?
What is the origin of the word "simultaneously"?
Is PlainSpell free to use?
Using “simultaneously”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is S-I-M-U-L-T-A-N-E-O-U-S-L-Y - every other letter order is a misspelling in standard orthography.
- Say it as /ˌsɪmlˈteɪnɪəsli/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “simultaneous” - see the side-by-side comparison. simultaneously vs simultaneous
- 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.