Which to use
“slack” and “slacks” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #11,118
- “slack” frequency rank
- #33,420
- “slacks” frequency rank
- 44538
- confusion score
Side-by-Side Comparison
| Feature | slack | slacks |
|---|---|---|
| Definition | The part of anything that hangs loose, having no strain upon it. | Semi-formal trousers which are less formal than those that are part of a suit but nowadays are considered suitable casualwear in most offices. (Takes a plural verb even when referring to a single pair; may be referred to as a pair of slacks.) |
Where the spellings diverge
Shared letters are muted; the letters that actually set slack and slacks apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
slack and slacks 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 extra letter(s) - “slack” sits inside “slacks” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 44538, derived from the frequency rank of both members and their visual similarity.
slack is recorded at frequency rank #11,118, classified as anoun, pronounced /slæk/. slacks is at rank #33,420, tagged as anoun.
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 44538, this pair ranks #229,593 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "slack" and "slacks" be used interchangeably?
Remembering slack vs slacks
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “slack” entry
- Browse more pairs most likely to be confused. Most confusable