lackvslaxWhat's the difference?

Which to use

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

#1,274
“lack” frequency rank
#14,157
“lax” frequency rank
15431
confusion score

Side-by-Side Comparison

Feature lack lax
Definition A deficiency or need (of something desirable or necessary); an absence, want, dearth. A salmon.

Where the eye mixes lack and lax

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

4 ch
lack
3 ch
lax

Spelling & Dictionary Insight

A purely visual mix-up. lack (/læk/) and lax (/læks/) 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 15431, derived from the frequency rank of both members and their visual similarity.

lack is recorded at frequency rank #1,274, classified as anoun, pronounced /læk/. lax is at rank #14,157, tagged as anoun, pronounced /læks/.

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 15431, this pair ranks #464,007 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of lack vs lax

Shared letters: al. Private to "lack": ck. Private to "lax": x.

"lack" · 4 letters · shape CVCC  ·  "lax" · 3 letters · shape CVC

Known mistypes of this pair

  • lackalck · lacck · lackk · lakc · lcak · llack

Frequently Asked Questions

Can "lack" and "lax" be used interchangeably?
No. They are said differently (/læk/ versus /læks/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "lack" or "lax"?
"lack" is the more common of the two: it sits at frequency rank #1,274 in our English list, against #14,157 for "lax". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list