ecologicalvsecologicallyTell them apart

Quick tell: ecological is a adjective, ecologically is an adverb, so they fill different roles in a sentence.

Which to use

“ecological” is an adjective and “ecologically” is an adverb - they look or sound alike but fill different roles in a sentence.

#9,884
“ecological” frequency rank
#36,971
“ecologically” frequency rank
46855
confusion score

Side-by-Side Comparison

Feature ecological ecologically
Definition Relating to ecology, the interrelationships of organisms and their environment. In an ecological manner.

Letter map: ecological vs ecologically

Shared letters muted; letters that set ecological and ecologically apart highlighted. Shared run: 10.

10 ch
ecological
12 ch
ecologically

Part-of-speech tell for ecological / ecologically

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ecological is anadjective and ecologicallyanadverb. On the page they differ by 2 extra letter(s) - “ecological” sits inside “ecologically”. Our composite confusion score for this pair is 46855, derived from the frequency rank of both members and their visual similarity.

ecological is recorded at frequency rank #9,884, classified as anadj, pronounced /ˌiːkəˈlɒd͡ʒɪkl̩/. ecologically is at rank #36,971, tagged as anadv.

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 46855, this pair ranks #207,823 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ecological vs ecologically

Shared letters: acegilo. Private to "ecological": -. Private to "ecologically": y.

"ecological" · 10 letters · shape VCVCVCVCVC  ·  "ecologically" · 12 letters · shape VCVCVCVCVCCV

Known mistypes of this pair

  • ecologicalceological · eccological · ecloogical · ecolgoical · ecollogical · ecologcial · ecologgical · ecologiacl
  • ecologicallyceologically · eccologically · ecloogically · ecolgoically · ecollogically · ecologcially · ecologgically · ecologiaclly

Frequently Asked Questions

Is swapping "ecological" for "ecologically" ever safe?
No - they are not even the same part of speech. "ecological" is an adjective and "ecologically" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ecological" or "ecologically"?
"ecological" is the more common of the two: it sits at frequency rank #9,884 in our English list, against #36,971 for "ecologically". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "ecological" and "ecologically". Here's where to go from here.

  • Full dictionary entry for "ecological" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ecologically" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #207,823 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "ecological" and "ecologically" also get mixed up with nearby pairs, the highest-scored neighbour is "ecologically vs economically". 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 #207,823 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