Which to use
“sigh” is a verb and “sixth” is an adjective - they look or sound alike but fill different roles in a sentence.
- #7,742
- “sigh” frequency rank
- #3,785
- “sixth” frequency rank
- 11527
- confusion score
Side-by-Side Comparison
| Feature | sigh | sixth |
|---|---|---|
| Definition | To inhale a larger quantity of air than usual, and immediately expel it; to make a deep single audible respiration, especially as the result or involuntary expression of fatigue, exhaustion, grief, sorrow, frustration, or the like. | The ordinal form of the number six. |
Where the spellings diverge
Shared letters are muted; the letters that actually set sigh and sixth apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
sigh and sixth 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 11527, derived from the frequency rank of both members and their visual similarity.
sigh is recorded at frequency rank #7,742, classified as averb, pronounced /saɪ/. sixth is at rank #3,785, tagged as anadj, pronounced /sɪksθ/.
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 11527, this pair ranks #486,524 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "sigh" and "sixth" be used interchangeably?
Remembering sigh vs sixth
The fastest way to pick the right one every time.
- Check the role first: if you need a verb, it's “sigh”; for an adjective, it's “sixth”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “sigh” entry
- Browse more pairs most likely to be confused. Most confusable