thunder

/ˈθʌndə/

//ˈθʌndə// noun

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

"thunder" is a 7-letter English headword indexed on PlainSpell.

The verdict

“thunder” has 11 generated spelling variants in the English index at frequency #5,744. The variants make it a useful spelling check.

#5,744
frequency rank, English
3,151
“T” headwords
11
tracked misspellings
5
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The loud rumbling, cracking, or crashing sound caused by expansion of rapidly heated air around a lightning bolt.

Corpus desk

Index EN-thunder · thunder · English

thunder · rank #5,744 · 11 variants · 5 confusables

  • FREQ-COMMON #5,744
  • LEN-LONG 7 letters
  • VOW-2 2 vowels
  • CONFUS-MID 5 pairs
  • VAR-MID 11 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH teenage

Nearest frequency peer: teenage (-1 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.

Rank peers near misspelling magnet “thunder”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “thunder” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

thunder vs tuner
71% similar
thunder vs tinder
71% similar
thunder vs tender
71% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for thunder
PropertyValue
Headwordthunder
LanguageEnglish
Part of speechNoun
IPA/ˈθʌndə/
Letters7
Frequency rank#5,744
Misspellings tracked11
Confusable pairs5
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “thunder”

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).thunderlands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “teenage” (#5,743), “Tours” (#5,745), “tattoo” (#5,742). Among 3,151 “T” headwords, “thunder” is #5,744. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 11 spelling variants around thunder (IPA /ˈθʌndə/), anoun. Corpus frequency is #5,744 among 3,151 “T” headwords. Wiktionary lists 5 senses, so context still picks the gloss.

Our generated misspelling index lists 11 likely wrong-spelling variants for thunder, with forms such as "htunder", "thhunder", and "thnuder". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 5 confusable-pair relationships, "tuner", "tinder", "tender", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English thunder, thonder, thundre, thonre, thunnere, þunre, from Old English þunor (“thunder”), from Proto-West Germanic *þunr, from Proto-Germanic *þunraz, from Proto-Indo-European *(s)ten-, *(s)tenh₂- (“to thunder”). Compare astound, astonish,… The correct English form is thunder, spelled T-H-U-N-D-E-R.

Definition

  1. 1
    The loud rumbling, cracking, or crashing sound caused by expansion of rapidly heated air around a lightning bolt.
  2. 2
    A deep, rumbling noise resembling thunder.
  3. 3
    An alarming or startling threat or denunciation.
  4. 4
    The discharge of electricity; a thunderbolt.
  5. 5
    Synonym of thunder word.

Recorded use

Wiktionary examples

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

  1. Thunder is preceded by lightning.
  2. With each clap of thunder echoing from one high building to another the noise was terrific.

Etymology

From Middle English thunder, thonder, thundre, thonre, thunnere, þunre, from Old English þunor (“thunder”), from Proto-West Germanic *þunr, from Proto-Germanic *þunraz, from Proto-Indo-European *(s)ten-, *(s)tenh₂- (“to thunder”). Compare astound, astonish, stun. Germanic cognates include West Frisian tonger, Dutch donder, German Donner, Old Norse Þórr (English Thor), Danish torden, Norwegian Nynorsk tore. Other cognates include Persian تندر (tondar), Latin tonō, detonō, Ancient Greek στένω (sténō), στενάζω (stenázō), στόνος (stónos), Στέντωρ (Sténtōr), Irish torann, Welsh taran, Gaulish Taranis. Doublet of donner, Thunor, and Thor.

This word in other languages

trueno(Español)tonnerre(Français)Donner(Deutsch)trovão(Português)

Common misspellings

Also misspelled as:

  • htunder
  • thhunder
  • thnuder
  • thudner
  • thundder
  • thunderr
  • thundre
  • thunedr
  • thunnder
  • tthunder
  • tuhnder

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of thunder - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

htunder2thhunder1thnuder2thudner2thundder1thunderr1thundre2thunedr2
Edit distance from "thunder"

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 "thunder"?
"thunder" is spelled T-H-U-N-D-E-R. The IPA pronunciation is /ˈθʌndə/.
What does "thunder" mean?
As a noun, "thunder" means: The loud rumbling, cracking, or crashing sound caused by expansion of rapidly heated air around a lightning bolt.
What words are commonly confused with "thunder"?
"thunder" is commonly confused with "tuner", "tinder", "tender". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "thunder"?
The IPA (International Phonetic Alphabet) transcription for "thunder" is /ˈθʌndə/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "thunder"?
From Middle English thunder, thonder, thundre, thonre, thunnere, þunre, from Old English þunor (“thunder”), from Proto-West Germanic *þunr, from Proto-Germanic *þunraz, from Proto-Indo-European *(s)ten-, *(s)tenh₂- (“to thunder”). Compare astound,... 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 "thunder", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

teenage#5,743tragedy#5,746Vincent#5,748acquire#5,752

Similar misspelling depth

Headwords with a similar count of attested misspellings (11 here; floor ≥5).

succeeded11 variantscircles11 variantsmuscles11 variantsjustify11 variants

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

Source: FrequencyWords open word-frequency list