Which to use
“substantial” is an adjective and “substantially” is an adverb - they look or sound alike but fill different roles in a sentence.
- #4,126
- “substantial” frequency rank
- #7,616
- “substantially” frequency rank
- 11742
- confusion score
Side-by-Side Comparison
| Feature | substantial | substantially |
|---|---|---|
| Definition | Having a substance; actually existing. | In a strong or substantial manner; considerably. |
Letter map: substantial vs substantially
Shared letters muted; letters that set substantial and substantially apart highlighted. Shared run: 11.
Role in the sentence - substantial and substantially
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: substantial is anadjective and substantiallyanadverb. On the page they differ by 2 extra letter(s) - “substantial” sits inside “substantially”. Our composite confusion score for this pair is 11742, derived from the frequency rank of both members and their visual similarity.
substantial is recorded at frequency rank #4,126, classified as anadj, pronounced /səbˈstænʃəl/. substantially is at rank #7,616, 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 11742, this pair ranks #485,384 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of substantial vs substantially
Shared letters: abilnstu. Private to "substantial": -. Private to "substantially": y.
"substantial" · 11 letters · shape CVCCCVCCVVC · "substantially" · 13 letters · shape CVCCCVCCVVCCV
Known mistypes of this pair
- substantial ← sbustantial · ssubstantial · subbstantial · subsatntial · subsstantial · substanital · substanntial · substantail
- substantially ← sbustantially · ssubstantially · subbstantially · subsatntially · subsstantially · substanitally · substanntially · substantailly
Frequently Asked Questions
Is swapping "substantial" for "substantially" ever safe?
In ordinary English text, does "substantial" or "substantially" show up more?
After this comparison
Pair "substantial" vs "substantially" is on the table, pick a follow-up below.
- Full dictionary entry for "substantial" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "substantially" - compare definitions side by side with the headword page. Word entry
- This pair ranks #485,384 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "substantial" and "substantially" also get mixed up with nearby pairs, the highest-scored neighbour is "substantial vs substantiate". 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 #485,384 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.