STL vs sul, What's the Difference?

Which to use

“STL” is a noun and “sul” is an article - they look or sound alike but fill different roles in a sentence.

#48,211
“STL” frequency rank: #33,033
“sul” frequency rank: 81244
confusion score

Side-by-Side Comparison

Feature	STL	sul
Definition	Une des huit séries du baccalauréat technologique, couvrant deux années de préparation avant le baccalauréat.	Sur le.

Where the spellings diverge

Shared letters are muted; the letters that actually set STL and sul apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

STL

3 ch

sul

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: STL is \ɛs.te.ɛl\ while sul is \ˈsul\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - t in “STL” becomes u in “sul”, and the parts of speech differ too (noun vs article), which is usually the fastest check. Our composite confusion score for this pair is 81244, derived from the frequency rank of both members and their visual similarity.

STL is recorded at frequency rank #48,211, classified as anoun, pronounced \ɛs.te.ɛl\. sul is at rank #33,033, tagged as anarticle, pronounced \ˈsul\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 81244, this pair ranks #19,175 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of STL vs sul

Shared letters: ls. Private to "STL": t. Private to "sul": u.

"STL" · 3 letters · shape CCC · "sul" · 3 letters · shape CVC

Frequency comparison

STL#48,211

sul#33,033

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "STL" and "sul" be used interchangeably?

No - they are not even the same part of speech. "STL" is a noun and "sul" an article, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "STL" or "sul"?

"sul" is the more common of the two: it sits at frequency rank #33,033 in our French list, against #48,211 for "STL". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering STL vs sul

The fastest way to pick the right one every time.

Check the role first: if you need a noun, it's “STL”; for an article, it's “sul”.
See each word in full, definition, IPA, etymology and its other confusables. Full “STL” entry
Browse more pairs most likely to be confused. Most confusable