Which to use
“soundly” is an adverb and “Sunday” is a noun - they look or sound alike but fill different roles in a sentence.
- #30,238
- “soundly” frequency rank
- #1,287
- “Sunday” frequency rank
- 31525
- confusion score
Side-by-Side Comparison
| Feature | soundly | Sunday |
|---|---|---|
| Definition | In a thorough manner; in manner free of defect or deficiency. | The first day of the week in many religious traditions, and the seventh day of the week in systems using the ISO 8601 standard; the Christian Sabbath; the Lord's Day; it follows Saturday and precedes Monday. |
Where the spellings diverge
Shared letters are muted; the letters that actually set soundly and Sunday apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
soundly and Sunday form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 31525, derived from the frequency rank of both members and their visual similarity.
soundly is recorded at frequency rank #30,238, classified as anadv, pronounced /ˈsaʊnd.lɪ/. Sunday is at rank #1,287, tagged as anoun, pronounced /ˈsʌn.deɪ/.
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 31525, this pair ranks #345,374 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "soundly" and "Sunday" be used interchangeably?
Remembering soundly vs Sunday
The fastest way to pick the right one every time.
- Check the role first: if you need an adverb, it's “soundly”; for a noun, it's “Sunday”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “soundly” entry
- Browse more pairs most likely to be confused. Most confusable