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 18,836 “E” headwords), classed as a noun. The kind of spelling people second-guess.

#69,828
frequency rank, English
18,836
“E” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Enthusiasm, liveliness; impulsiveness.

Key facts for entrainment
PropertyValue
Headwordentrainment
LanguageEnglish
Part of speechNoun
Letters11
Frequency rank#69,828
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “entrainment” 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). entrainment lands here:

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

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

Rare enough to double-check

entrainment is uncommon English at frequency #69,828 among 18,836 “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.

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.

Using “entrainment”

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

  • The one correct English spelling is E-N-T-R-A-I-N-M-E-N-T - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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