series

/ˈsɪə.ɹiːz/

//ˈsɪə.ɹiːz// noun

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

"series" is a 6-letter English headword indexed on PlainSpell.

The verdict

“series” is in the everyday core of English, ranked #450 in English word frequency and used as a noun.

#450
frequency rank, English
6
letters
8
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A number of things that follow on one after the other or are connected one after the other.

Visual similarity to commonly confused words

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

series vs serve
67% similar
series vs skies
67% similar
series vs spies
67% similar

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

Key facts for series
PropertyValue
Headwordseries
LanguageEnglish
Part of speechNoun
IPA/ˈsɪə.ɹiːz/
Letters6
Frequency rank#450
Misspellings tracked8
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “series” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for series is 6 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈsɪə.ɹiːz/. Corpus data places it at rank #450 in overall English word frequency, putting it firmly in the everyday core of the language. Wiktionary records 10 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 8 likely wrong-spelling variants for series, with forms such as "esries", "seires", and "sereis". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 20 confusable-pair relationships, "serve", "skies", "spies", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: Attested from the 1610s; borrowed from Latin seriēs, from serere (“to join together, bind”), ultimately from Proto-Indo-European *ser- (“to bind, put together, to line up”). Related to desert, insert, sermon, and sorcerer. The correct English form is series, spelled S-E-R-I-E-S.

Definition

  1. 1
    A number of things that follow on one after the other or are connected one after the other.
  2. 2
    A television or radio program consisting of several episodes that are broadcast at regular intervals.
  3. 3
    Synonym of season (“one of the groups of episodes that together make up a whole series”).
  4. 4
    The sequence of partial sums ∑ᵢ₌₁ⁿa_i of a given sequence aᵢ.
  5. 5
    A group of matches between two sides, with the aim being to win more matches than the opposition.
  6. 6
    The optional taxonomic rank above order/subseries, but below superorder.
  7. 7
    The optional taxonomic rank above group, but below epifamily.
  8. 8
    A subdivision of a genus, a taxonomic rank below that of section (and subsection) but above that of species.
  9. 9
    A parcel of rough diamonds of assorted qualities.
  10. 10
    A set of consonants that share a particular phonetic or phonological feature.

Etymology

Attested from the 1610s; borrowed from Latin seriēs, from serere (“to join together, bind”), ultimately from Proto-Indo-European *ser- (“to bind, put together, to line up”). Related to desert, insert, sermon, and sorcerer.

Synonyms

serie

This word in other languages

serie(Español)suite(Français)Serie(Deutsch)série(Português)

Common misspellings

Also misspelled as: esries,seires,sereis,seriess,serise,serries,sreies,sseries

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of series - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

esries2seires2sereis2seriess1serise2serries1sreies2sseries1
Edit distance from "series"

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 "series"?
"series" is spelled S-E-R-I-E-S. The IPA pronunciation is /ˈsɪə.ɹiːz/.
What does "series" mean?
As a noun, "series" means: A number of things that follow on one after the other or are connected one after the other.
What words are commonly confused with "series"?
"series" is commonly confused with "serve", "skies", "spies". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "series"?
The IPA (International Phonetic Alphabet) transcription for "series" is /ˈsɪə.ɹiːz/. 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 "series"?
Attested from the 1610s; borrowed from Latin seriēs, from serere (“to join together, bind”), ultimately from Proto-Indo-European *ser- (“to bind, put together, to line up”). Related to desert, insert, sermon, and sorcerer. 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 “series”

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

  • The one correct English spelling is S-E-R-I-E-S - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈsɪə.ɹiːz/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “serve” - see the side-by-side comparison. series vs serve
  • 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