illicitvsimplicitTell them apart

Which to use

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

#16,498
“illicit” frequency rank
#16,049
“implicit” frequency rank
32547
confusion score

Side-by-Side Comparison

Feature illicit implicit
Definition Not approved by law, but not invalid. Suggested indirectly, without being directly expressed.

Where the eye mixes illicit and implicit

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

7 ch
illicit
8 ch
implicit

Look-alike desk: illicit vs implicit

A purely visual mix-up. illicit (/ɪˈlɪsɪt/) and implicit (/ɪmˈplɪsɪt/) 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 32547, derived from the frequency rank of both members and their visual similarity.

illicit is recorded at frequency rank #16,498, classified as anadj, pronounced /ɪˈlɪsɪt/. implicit is at rank #16,049, tagged as anadj, pronounced /ɪmˈplɪsɪt/.

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 32547, this pair ranks #336,863 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of illicit vs implicit

Shared letters: cilt. Private to "illicit": -. Private to "implicit": mp.

"illicit" · 7 letters · shape VCCVCVC  ·  "implicit" · 8 letters · shape VCCCVCVC

Known mistypes of this pair

  • illicitilicit · ililcit · illciit · illiccit · illicitt · illicti · illiict · lilicit
  • implicitimlpicit · immplicit · impilcit · implciit · impliccit · implicitt · implicti · impliict

Frequently Asked Questions

Do "illicit" and "implicit" mean the same thing in a sentence?
No. They are said differently (/ɪˈlɪsɪt/ versus /ɪmˈplɪsɪt/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "illicit" or "implicit"?
"implicit" is the more common of the two: it sits at frequency rank #16,049 in our English list, against #16,498 for "illicit". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "illicit" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "implicit" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #336,863 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "illicit" and "implicit" also get mixed up with nearby pairs, the highest-scored neighbour is "implicate vs implicit". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #336,863 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