secvssetWhich spelling fits?

Quick tell: sec is a adjective, set is a noun, so they fill different roles in a sentence.

Which to use

“sec” is an adjective and “set” is a noun - they look or sound alike but fill different roles in a sentence.

#17,813
“sec” frequency rank
#6,460
“set” frequency rank
24273
confusion score

Side-by-Side Comparison

Feature sec set
Definition Seco Subdivisión del partido o match, la cual se obtiene ganando 6 juegos o games (con diferencia de dos o con tie break en su defecto).

Where the eye mixes sec and set

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
sec
3 ch
set

Visual trap between sec and set

These two trip readers on the page rather than in the ear: sec is [sɛk] while set is [ˈset̪]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - c in “sec” becomes t in “set”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 24273, derived from the frequency rank of both members and their visual similarity.

sec is recorded at frequency rank #17,813, classified as anadj, pronounced [sɛk]. set is at rank #6,460, tagged as anoun, pronounced [ˈset̪].

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 24273, this pair ranks #241,920 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sec vs set

Shared letters: es. Private to "sec": c. Private to "set": t.

"sec" · 3 letters · shape CVC  ·  "set" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "sec" for "set" ever safe?
No - they are not even the same part of speech. "sec" is an adjective and "set" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sec" or "set"?
"set" is the more common of the two: it sits at frequency rank #6,460 in our Spanish list, against #17,813 for "sec". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "sec" and "set" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "sec" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "set" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #241,920 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "sec" and "set" also get mixed up with nearby pairs, the highest-scored neighbour is "sec vs stem". Nearby pair

Confusion rank #241,920 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list