larvslumTell them apart

Which to use

“lar” and “lum” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#40,323
“lar” frequency rank
#47,736
“lum” frequency rank
88059
confusion score

Side-by-Side Comparison

Feature lar lum
Definition singular of lares: a household god, particularly overseeing the family itself. A chimney; also, the top part of a chimney.

Where the eye mixes lar and lum

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. lar and lum follow the identical consonant-vowel pattern (CVC). Same shape at a glance is often the real trap, independent of shared letters.

3 ch
lar
3 ch
lum

Visual trap between lar and lum

A purely visual mix-up. lar (/lɑː/) and lum (/lʌm/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 88059, derived from the frequency rank of both members and their visual similarity.

lar is recorded at frequency rank #40,323, classified as anoun, pronounced /lɑː/. lum is at rank #47,736, tagged as anoun, pronounced /lʌm/.

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 88059, this pair ranks #6,843 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of lar vs lum

Shared letters: l. Private to "lar": ar. Private to "lum": mu.

"lar" · 3 letters · shape CVC  ·  "lum" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "lar" for "lum" ever safe?
No. They are said differently (/lɑː/ versus /lʌm/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "lar" or "lum"?
"lar" is the more common of the two: it sits at frequency rank #40,323 in our English list, against #47,736 for "lum". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "lar" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lum" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #6,843 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "lar" and "lum" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs lum". Nearby pair

Confusion rank #6,843 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list