mom-in-law

noun

"mom-in-law" is a 8-letter English headword indexed on PlainSpell.

The verdict

“mom-in-law” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - mother-in-law

Corpus desk

Index EN-mom-in-law · mom-in-law · English

mom-in-law · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "M" thin
  • PHOTO-UNK Peer pending

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.

Key facts for mom-in-law
PropertyValue
Headwordmom-in-law
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “mom-in-law” in English

mom-in-lawranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

mom-in-law is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "mother-in-law".

mom-in-law has no tracked misspelling variants, a straightforward case of a spelling with little room for common typos. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From mom + -in-law. The correct English form is mom-in-law, spelled M-O-M---I-N---L-A-W.

Definition

  1. 1
    mother-in-law

Etymology

From mom + -in-law.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "mom-in-law"?
"mom-in-law" is spelled M-O-M---I-N---L-A-W.
What does "mom-in-law" mean?
As a noun, "mom-in-law" means: mother-in-law
What is the origin of the word "mom-in-law"?
From mom + -in-law. 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.

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

Source: FrequencyWords open word-frequency list