lacvslooWhich spelling fits?

Quick tell: lac is a noun, loo is a verb, so they fill different roles in a sentence.

Which to use

“lac” is a noun and “loo” is a verb - they look or sound alike but fill different roles in a sentence.

#48,497
“lac” frequency rank
#43,690
“loo” frequency rank
92187
confusion score

Side-by-Side Comparison

Feature lac loo
Definition Lago. Primera persona del singular (yo) del presente de indicativo de loar.

Where the eye mixes lac and loo

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. lac (CVC) and loo (CVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
lac
3 ch
loo

Visual trap between lac and loo

These two trip readers on the page rather than in the ear: lac is [lak] while loo is [ˈloo]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 92187, derived from the frequency rank of both members and their visual similarity.

lac is recorded at frequency rank #48,497, classified as anoun, pronounced [lak]. loo is at rank #43,690, tagged as averb, pronounced [ˈloo].

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 92187, this pair ranks #1,633 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of lac vs loo

Shared letters: l. Private to "lac": ac. Private to "loo": o.

"lac" · 3 letters · shape CVC  ·  "loo" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "lac" for "loo" ever safe?
No - they are not even the same part of speech. "lac" is a noun and "loo" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "lac" vs "loo" - which ranks higher?
"loo" is the more common of the two: it sits at frequency rank #43,690 in our Spanish list, against #48,497 for "lac". 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 "lac" and "loo" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "lac" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "loo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,633 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "lac" and "loo" also get mixed up with nearby pairs, the highest-scored neighbour is "lac vs lapa". Nearby pair

Confusion rank #1,633 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