spa
/ˈspɑː/
"spa" is a 3-letter English headword indexed on PlainSpell.
The verdict
“spa” sits in 20 confusable pairs (corpus #7,611) as a noun. The look-alike neighbours are the real trap.
- #7,611
- frequency rank, English
- 6,566
- “S” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A health resort near a mineral spring or hot spring.
Corpus desk
Index EN-spa · spa · English
spa · rank #7,611 · 0 variants · 20 confusables
- FREQ-COMMON #7,611
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH socially
Nearest frequency peer: socially (-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.
Frequency neighbourhood for “spa”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- shoots
shoots
92,393 corpus weight
- skirt
skirt
92,392 corpus weight
- socially
socially
92,391 corpus weight
- spa
spa
92,390 corpus weight
- spike
spike
92,389 corpus weight
- sprint
sprint
92,388 corpus weight
What this shows Bars show where “spa” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | spa |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈspɑː/ |
| Letters | 3 |
| Frequency rank | #7,611 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “spa” sits in English frequency
Easy to mix with look-alikes
The spelling risk for spa is neighbouring look-alikes ("SS", "su", …), not just typos; it is anoun pronounced /ˈspɑː/. Frequency #7,611 among 6,566 “S” headwords. 5 recorded senses keep meaning in play.
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
- 1A health resort near a mineral spring or hot spring.
- 2A trendy or fashionable resort.
- 3A health club.
- 4A hot tub.
- 5A convenience store.
Recorded use
Wiktionary examplesThese source excerpts show how spa appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
They went to a spa for a massage.
Their bath is fitted with a spa.
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "spa", not the corpus desk frequency band.
What to do next
You've looked up "spa". Here's where to go from here.
- "spa" maps to 20 confusable pairs in this vintage; the highest-scored is "SS". View pair
- Usage frequency rank #7,611 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "S" letter cohort. S–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
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.