spa

/ˈspɑː/

//ˈspɑː// noun

"spa" is a 3-letter English headword indexed on PlainSpell.

The verdict

“spa” is a regularly-used English word, ranked #7,611 in English word frequency and used as a noun.

#7,611
frequency rank, English
3
letters
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A health resort near a mineral spring or hot spring.

Visual similarity to commonly confused words

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

spa vs SS
0% similar
spa vs su
33% similar
spa vs SW
0% similar

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

Key facts for spa
PropertyValue
Headwordspa
LanguageEnglish
Part of speechNoun
IPA/ˈspɑː/
Letters3
Frequency rank#7,611
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “spa” 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). spa lands here:

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

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

Spelling & Dictionary Insight

The English entry for spa is 3 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈspɑː/. Corpus data places it at rank #7,611 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 5 distinct senses for this headword, so context determines which meaning a reader should apply.

No generated misspelling entries exist for spa in our index, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "SS", "su", "SW", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: The term is derived from the name of the Belgian town of Spa, where since medieval times illnesses caused by iron deficiency were treated by drinking chalybeate (iron-bearing) spring water. In 16ᵗʰ century England the old Roman ideas of medicinal bathing we… The correct English form is spa, spelled S-P-A.

Definition

  1. 1
    A health resort near a mineral spring or hot spring.
  2. 2
    A trendy or fashionable resort.
  3. 3
    A health club.
  4. 4
    A hot tub.
  5. 5
    A convenience store.

Etymology

The term is derived from the name of the Belgian town of Spa, where since medieval times illnesses caused by iron deficiency were treated by drinking chalybeate (iron-bearing) spring water. In 16ᵗʰ century England the old Roman ideas of medicinal bathing were revived at towns like Bath, and in 1571 William Slingsby who had been to the Belgian town (which he called Spaw) discovered a chalybeate spring in Yorkshire. He built an enclosed well at what became known as Harrogate, the first resort in England for drinking medicinal waters, then in 1596 Dr. Timothy Bright called the resort The English Spaw, beginning the use of the word Spa as a generic description rather than as the place name of the Belgian town. At first this term referred specifically to resorts for water drinking rather than bathing, but this distinction was gradually lost and many spas offer external remedies. There are various stories about the origin of the name. A Belgian spring of iron-bearing water was called Espa from the Walloon term for "fountain", and was used in 1326 as a cure by an iron master with such success that he founded a health resort that developed into the town, though it has been suggested that this term may be derived from the name of the resort. Some have suggested that the town's name can be ultimately sourced from Latin spargere (“to scatter, sprinkle, or moisten”), though this derivation is problematic.

Synonyms

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); 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 "spa"?
"spa" is spelled S-P-A. The IPA pronunciation is /ˈspɑː/.
What does "spa" mean?
As a noun, "spa" means: A health resort near a mineral spring or hot spring.
What words are commonly confused with "spa"?
"spa" is commonly confused with "SS", "su", "SW". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "spa"?
The IPA (International Phonetic Alphabet) transcription for "spa" is /ˈspɑː/. 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 "spa"?
The term is derived from the name of the Belgian town of Spa, where since medieval times illnesses caused by iron deficiency were treated by drinking chalybeate (iron-bearing) spring water. In 16ᵗʰ century England the old Roman ideas of medicinal ... 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 “spa”

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

  • The one correct English spelling is S-P-A - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈspɑː/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “SS” - see the side-by-side comparison. spa vs SS
  • Browse more English words and confusable pairs in the same reference. English words
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