LucanvsluckyWhat's the difference?

Quick tell: Lucan is a name, lucky is an adjective, so they fill different roles in a sentence.

Which to use

“Lucan” is a name and “lucky” is an adjective - they look or sound alike but fill different roles in a sentence.

#44,911
“Lucan” frequency rank
#1,766
“lucky” frequency rank
46677
confusion score

Side-by-Side Comparison

Feature Lucan lucky
Definition The Roman poet Marcus Annaeus Lucanus. Favoured by luck; fortunate; having good success or good fortune.

Letter map: Lucan vs lucky

Shared letters muted; letters that set Lucan and lucky apart highlighted. Shared run: 3.

5 ch
Lucan
5 ch
lucky

Role in the sentence - Lucan and lucky

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Lucan is aname and luckyanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 46677, derived from the frequency rank of both members and their visual similarity.

Lucan is recorded at frequency rank #44,911, classified as aname. lucky is at rank #1,766, tagged as anadj, pronounced /ˈlʌki/.

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 46677, this pair ranks #209,478 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Lucan vs lucky

Shared letters: clu. Private to "Lucan": an. Private to "lucky": ky.

"Lucan" · 5 letters · shape CVCVC  ·  "lucky" · 5 letters · shape CVCCV

Known mistypes of this pair

  • Lucanlcuan · llucan · luacn · lucann · luccan · lucna · ulcan
  • luckylcuky · llucky · luccky · luckky · luckyy · lucyk · lukcy · ulcky

Frequently Asked Questions

Do "Lucan" and "lucky" mean the same thing in a sentence?
No - they are not even the same part of speech. "Lucan" is a name and "lucky" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Lucan" or "lucky"?
"lucky" is the more common of the two: it sits at frequency rank #1,766 in our English list, against #44,911 for "Lucan". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pair "Lucan" vs "lucky" is on the table, pick a follow-up below.

  • Full dictionary entry for "Lucan" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lucky" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #209,478 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Lucan" and "lucky" also get mixed up with nearby pairs, the highest-scored neighbour is "Lucan vs lucent". 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 #209,478 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