wisdom tooth

noun

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

The verdict

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

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - One of the four (one upper and one lower on each side) rearmost molars in humans, which typically develop between ages 18-24.

Corpus desk

Index EN-wisdom-tooth · wisdom tooth · English

wisdom tooth · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "W" 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 wisdom tooth
PropertyValue
Headwordwisdom tooth
LanguageEnglish
Part of speechNoun
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “wisdom tooth” in English

wisdom toothranks 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

wisdom tooth is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "One of the four (one upper and one lower on each side) rearmost molars in humans, which typically develop between ages 18-24.".

No misspelling variants are generated for wisdom tooth in our index, a straightforward case of a spelling with little room for common typos. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From wisdom + tooth, calque of Latin dēns sapientiae, which is itself a calque of Ancient Greek σωφρονιστῆρες (sōphronistêres, “prudent or self-controlled ones (i.e. teeth)”), because they arrive approximately when one has reached the age of prudence or wis… The correct English form is wisdom tooth, spelled W-I-S-D-O-M- -T-O-O-T-H.

Definition

  1. 1
    One of the four (one upper and one lower on each side) rearmost molars in humans, which typically develop between ages 18-24.

Etymology

From wisdom + tooth, calque of Latin dēns sapientiae, which is itself a calque of Ancient Greek σωφρονιστῆρες (sōphronistêres, “prudent or self-controlled ones (i.e. teeth)”), because they arrive approximately when one has reached the age of prudence or wisdom. Compare also German Weisheitszahn (“wisdom tooth”), Danish visdomstand (“wisdom tooth”), Swedish visdomstand (“wisdom tooth”), Icelandic vísdómstönn (“wisdom tooth”), Dutch verstandskies (“wisdom tooth”, literally “intellect molar”), German Low German Verstandskuus (“wisdom tooth”, literally “wisdom molar”). Chinese 智齒 /智齿 (zhìchǐ), Russian зуб мудрости (zub mudrosti), Hebrew שן בינה (shen biná) and Finnish viisaudenhammas also mean “tooth of wisdom”.

This word in other languages

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 "wisdom tooth"?
"wisdom tooth" is spelled W-I-S-D-O-M- -T-O-O-T-H.
What does "wisdom tooth" mean?
As a noun, "wisdom tooth" means: One of the four (one upper and one lower on each side) rearmost molars in humans, which typically develop between ages 18-24.
What is the origin of the word "wisdom tooth"?
From wisdom + tooth, calque of Latin dēns sapientiae, which is itself a calque of Ancient Greek σωφρονιστῆρες (sōphronistêres, “prudent or self-controlled ones (i.e. teeth)”), because they arrive approximately when one has reached the age of prude... 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