Which to use
“through” is a preposition and “trough” is a noun - they look or sound alike but fill different roles in a sentence.
- #139
- “through” frequency rank
- #16,606
- “trough” frequency rank
- 16745
- confusion score
Side-by-Side Comparison
| Feature | through | trough |
|---|---|---|
| Definition | From one side or end of (something) to the other. | A long, narrow container, open on top, for feeding or watering animals. |
Where the eye mixes through and trough
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: through is /θɹuː/ while trough is /tɹɒf/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (preposition vs noun), which is usually the fastest check. Our composite confusion score for this pair is 16745, derived from the frequency rank of both members and their visual similarity.
through is recorded at frequency rank #139, classified as aprep, pronounced /θɹuː/. trough is at rank #16,606, tagged as anoun, pronounced /tɹɒf/.
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 16745, this pair ranks #455,822 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of through vs trough
Shared letters: ghortu. Private to "through": -. Private to "trough": -.
"through" · 7 letters · shape CCCVVCC · "trough" · 6 letters · shape CCVVCC
Known mistypes of this pair
Frequently Asked Questions
Can "through" and "trough" be used interchangeably?
Which is more common, "through" or "trough"?
What to do next
You've compared "through" and "trough". Here's where to go from here.
- Full dictionary entry for "through" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "trough" - compare definitions side by side with the headword page. Word entry
- This pair ranks #455,822 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "through" and "trough" also get mixed up with nearby pairs, the highest-scored neighbour is "trough vs troupe". 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
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.