regularization

noun

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

"regularization" is a 14-letter English headword indexed on PlainSpell.

The verdict

“regularization” is uncommon English (frequency #70,201 among 21,470 “R” headwords), classed as a noun. The kind of spelling people second-guess.

#70,201
frequency rank, English
21,470
“R” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The act of making regular, of regularizing.

Key facts for regularization
PropertyValue
Headwordregularization
LanguageEnglish
Part of speechNoun
Letters14
Frequency rank#70,201
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “regularization” 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). regularization 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

regularization is uncommon English at frequency #70,201 among 21,470 “R” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

No misspelling variants are generated for regularization in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From regular + -ization. The correct English form is regularization, spelled R-E-G-U-L-A-R-I-Z-A-T-I-O-N.

Definition

  1. 1
    The act of making regular, of regularizing.
  2. 2
    a process that simplifies results, often used to obtain results for ill-posed problems or to prevent overfitting.

Etymology

From regular + -ization.

This word in other languages

regularização(Português)

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 "regularization"?
"regularization" is spelled R-E-G-U-L-A-R-I-Z-A-T-I-O-N.
What does "regularization" mean?
As a noun, "regularization" means: The act of making regular, of regularizing.
What is the origin of the word "regularization"?
From regular + -ization. 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 “regularization”

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

  • The one correct English spelling is R-E-G-U-L-A-R-I-Z-A-T-I-O-N - 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