Which to use
“third” is an adjective and “thirst” is a noun - they look or sound alike but fill different roles in a sentence.
- #483
- “third” frequency rank
- #12,343
- “thirst” frequency rank
- 12826
- confusion score
Side-by-Side Comparison
| Feature | third | thirst |
|---|---|---|
| Definition | The ordinal form of the cardinal number three; Coming after the second. | A sensation of dryness in the throat associated with a craving for liquids, produced by deprivation of drink, or by some other cause (such as fear, excitement, etc.) which stops the secretion of the pharyngeal mucous membrane. |
Where the spellings diverge
Shared letters are muted; the letters that actually set third and thirst apart are highlighted. They share 4 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
third and thirst 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 12826, derived from the frequency rank of both members and their visual similarity.
third is recorded at frequency rank #483, classified as anadj, pronounced /θɜːd/. thirst is at rank #12,343, tagged as anoun, pronounced /θɜːst/.
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 12826, this pair ranks #479,342 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "third" and "thirst" be used interchangeably?
Remembering third vs thirst
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “third”; for a noun, it's “thirst”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “third” entry
- Browse more pairs most likely to be confused. Most confusable