STS

Name: STS, English Word Data
Creator: Wiktionary
License: https://creativecommons.org/licenses/by-sa/4.0/

noun

By PlainSpell · According to Wiktionary data (CC BY-SA) · analyzed September 3, 2026

The verdict

“STS” sits in 20 confusable pairs (corpus #20,790) as a noun. The look-alike neighbours are the real trap.

#20,790
frequency rank, English: 6,566
“S” headwords: 20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of science and technology studies.

Corpus desk

Index EN-sts · STS · English

STS · rank #20,790 · 0 variants · 20 confusables

FREQ-MID #20,790
LEN-MID 3 letters
VOW-0 0 vowels
CONFUS-HIGH 20 pairs
VAR-0 0 variants
BOOK-DENSE 6,566
PHOTO-FINISH strategist

Nearest frequency peer: strategist (-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.

stair

79,215
starship

79,214
strategist

79,212
STS

79,211
Subaru

79,210
sunken

79,208

What this shows Bars show where “STS” 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).

STS vs su

0% similar

STS vs SW

33% similar

STS vs SV

33% similar

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

Key facts for STS
Property	Value
Headword	STS
Language	English
Part of speech	Noun
Letters	3
Frequency rank	#20,790
Misspellings tracked	0
Confusable pairs	20
Source	Wiktionary (kaikki.org)

Where “STS” 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). STS lands here:

#20,790

#1#100#1K#10K#100K

← used constantlyrarely used →

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

Easy to mix with look-alikes

The spelling risk for STS is neighbouring look-alikes ("su", "SW", …), not just typos; it is anoun. Frequency #20,790 among 6,566 “S” headwords. 3 recorded senses keep meaning in play.

STS doesn't appear in our generated misspelling index, a straightforward case of a spelling with little room for common typos. It also participates in 20 confusable-pair relationships, "su", "SW", "SV", and more, where similar look or sound leads writers to substitute one word for another in context.

This entry's etymology isn't recorded, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is STS, spelled S-T-S.

Definition

1
Initialism of science and technology studies.
2
Initialism of secondary traumatic stress.
3
Initialism of special treatment steel (a type of homogenous armor plate).

Recorded use

Wiktionary examples

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

In the third chapter, Lars Fuglsang, with a sketch of three general approaches to STS in relation to public policy formation, considers two versions of determinism: one in which science and technology shape society, another in which society shapes science and technology.
Secondary traumatic stress (STS) is a form of post-traumatic stress disorder that has also been linked to burnouts. For Brendel, mindfulness is a way to simultaneously “mediate the risks and heal the healer”.

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.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "STS"?

"STS" is spelled S-T-S.

What does "STS" mean?

As a noun, "STS" means: Initialism of science and technology studies.

What words are commonly confused with "STS"?

"STS" is commonly confused with "su", "SW", "SV". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.

What language does "STS" come from?

"STS" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.

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 "STS", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

Tal#20,795 ter#20,796 SPD#20,781 Uri#20,808

What to do next

You've looked up "STS". Here's where to go from here.

"STS" maps to 20 confusable pairs in this vintage; the highest-scored is "su". View pair
Usage frequency rank #20,790 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.