Which to use
“constant” is an adjective and “constantly” is an adverb - they look or sound alike but fill different roles in a sentence.
- #2,781
- “constant” frequency rank
- #2,825
- “constantly” frequency rank
- 5606
- confusion score
Side-by-Side Comparison
| Feature | constant | constantly |
|---|---|---|
| Definition | Unchanged through time or space; permanent. | With steadfastness; with resolve; in loyalty, faithfully. |
Where the eye mixes constant and constantly
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Why the eye confuses constant with constantly
These two trip readers on the page rather than in the ear: constant is /ˈkɒnstənt/ while constantly is /ˈkɒnstəntli/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “constant” sits inside “constantly”, and the parts of speech differ too (adjective vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 5606, derived from the frequency rank of both members and their visual similarity.
constant is recorded at frequency rank #2,781, classified as anadj, pronounced /ˈkɒnstənt/. constantly is at rank #2,825, tagged as anadv, pronounced /ˈkɒnstəntli/.
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 5606, this pair ranks #514,662 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of constant vs constantly
Shared letters: acnost. Private to "constant": -. Private to "constantly": ly.
"constant" · 8 letters · shape CVCCCVCC · "constantly" · 10 letters · shape CVCCCVCCCV
Known mistypes of this pair
- constant ← cconstant · cnostant · connstant · consatnt · consstant · constannt · constantt · constatn
- constantly ← cconstantly · cnostantly · connstantly · consatntly · consstantly · constanlty · constanntly · constantlly
Frequently Asked Questions
Do "constant" and "constantly" mean the same thing in a sentence?
In ordinary English text, does "constant" or "constantly" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "constant" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "constantly" - compare definitions side by side with the headword page. Word entry
- This pair ranks #514,662 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "constant" and "constantly" also get mixed up with nearby pairs, the highest-scored neighbour is "Constantin vs constantly". 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 #514,662 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.