T1vsTHCWhich spelling fits?

Which to use

“T1” and “THC” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#22,113
“T1” frequency rank
#43,694
“THC” frequency rank
65807
confusion score

Side-by-Side Comparison

Feature T1 THC
Definition Premier trimestre : janvier, février et mars. Abréviation de tétrahydrocannabinol.

Where the eye mixes T1 and THC

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch
T1
3 ch
THC

Visual trap between T1 and THC

A purely visual mix-up. T1 (\te.œ̃\) and THC (\te.aʃ.se\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 65807, derived from the frequency rank of both members and their visual similarity.

T1 is recorded at frequency rank #22,113, classified as anoun, pronounced \te.œ̃\. THC is at rank #43,694, tagged as anoun, pronounced \te.aʃ.se\.

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 65807, this pair ranks #70,672 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of T1 vs THC

Shared letters: t. Private to "T1": -. Private to "THC": ch.

"T1" · 1 letters · shape C  ·  "THC" · 3 letters · shape CCC

Frequently Asked Questions

Is swapping "T1" for "THC" ever safe?
No. They are said differently (\te.œ̃\ versus \te.aʃ.se\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "T1" vs "THC" - which ranks higher?
"T1" is the more common of the two: it sits at frequency rank #22,113 in our French list, against #43,694 for "THC". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "T1" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "THC" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #70,672 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "T1" and "THC" also get mixed up with nearby pairs, the highest-scored neighbour is "THC vs tif". Nearby pair

Confusion rank #70,672 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list