entrainment

noun

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

"entrainment" is a 11-letter English headword indexed on PlainSpell.

The verdict

“entrainment” is uncommon English (frequency #69,828 among 2,246 “E” headwords), classed as a noun. The kind of spelling people second-guess.

#69,828
frequency rank, English
2,246
“E” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Enthusiasm, liveliness; impulsiveness.

Corpus desk

Index EN-entrainment · entrainment · English

entrainment · rank #69,828 · 0 variants · 0 confusables

  • FREQ-RARE #69,828
  • LEN-MEGA 11 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,246
  • PHOTO-FINISH exacerbation

Nearest frequency peer: exacerbation (+3 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.

Long-tail ranks near “entrainment”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “entrainment” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for entrainment
PropertyValue
Headwordentrainment
LanguageEnglish
Part of speechNoun
Letters11
Frequency rank#69,828
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “entrainment” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).entrainmentfalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “exacerbation” (#69,831), “enamelled” (#69,824), “excitability” (#69,832). Among 2,246 “E” headwords, “entrainment” is #69,828. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

entrainment is uncommon English at frequency #69,828 among 2,246 “E” headwords, classed as anoun. Rarity is why readers land here mid-draft. 6 senses are on record.

We couldn't generate a plausible misspelling set for entrainment, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: Partly from French entraînement and partly entrain + -ment. The correct English form is entrainment, spelled E-N-T-R-A-I-N-M-E-N-T.

Definition

  1. 1
    Enthusiasm, liveliness; impulsiveness.
  2. 2
    Any of several processes in which a solid or liquid is put into motion by a fluid.
  3. 3
    Any of several processes in which a solid or liquid is put into motion by a fluid.
  4. 4
    Any of several processes in which a solid or liquid is put into motion by a fluid.
  5. 5
    Any of several processes in which a solid or liquid is put into motion by a fluid.
  6. 6
    The alignment of an organism's circadian rhythm to an external rhythm in its environment.

Recorded use

Wiktionary examples

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

  1. Carlo Antonio Bertinazzi, he whom the French stage knows under the name of Carlin, was the gayest of all comedians; he knew a thousand ways of amusing his audience, and would make them die with pleasure and laughter by his affecting performance of the Vingt-six infortunes d’ Arlequin; the entrainment of his gaiety and bonhomie were everywhere extolled.
  2. A philosopher, through indolence and carelessness before the Revolution, superstitious afterwards, through weakness and entrainment [translating entraînement], he threatened the Revolution with his sword from a distance.

Etymology

Partly from French entraînement and partly entrain + -ment.

This word in other languages

trajino(Español)

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 "entrainment"?
"entrainment" is spelled E-N-T-R-A-I-N-M-E-N-T.
What does "entrainment" mean?
As a noun, "entrainment" means: Enthusiasm, liveliness; impulsiveness.
What is the origin of the word "entrainment"?
Partly from French entraînement and partly entrain + -ment. 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 "entrainment", not the corpus desk frequency band.

Same letter count

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

electrocute#69,817expensively#69,839fingerboard#69,853geolocation#69,883

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

Source: FrequencyWords open word-frequency list