doubtfully
"doubtfully" is a 10-letter English headword indexed on PlainSpell.
The verdict
“doubtfully” is outside the top-ranked English vocabulary, used as an adverb - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 10
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - In a doubtful manner, in context of doubt or ambiguity, questionably.
| Property | Value |
|---|---|
| Headword | doubtfully |
| Language | English |
| Part of speech | Adverb |
| Letters | 10 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “doubtfully” sits in English frequency
Spelling & Dictionary Insight
The English entry for doubtfully is 10 letters long, classified as an adverb. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "In a doubtful manner, in context of doubt or ambiguity, questionably.".
No generated misspelling entries exist for doubtfully in our index, typically a sign the spelling maps closely to how the word sounds. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From Middle English dowtfully, doutefulli, equivalent to doubtful + -ly. The correct English form is doubtfully, spelled D-O-U-B-T-F-U-L-L-Y.
Definition
- 1In a doubtful manner, in context of doubt or ambiguity, questionably.
Etymology
From Middle English dowtfully, doutefulli, equivalent to doubtful + -ly.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “doubtfully”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-O-U-B-T-F-U-L-L-Y - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.