Plural of Slacks
The clothing noun “slacks” is plural in form and normally takes plural agreement. One garment is “a pair of slacks,” and several are “pairs of slacks.” Cambridge marks this clothing term as US or old-fashioned in UK treatment, which is a regional/register note rather than a ban on the word.
“Slacks” is plural in form for trousers; one garment is normally “a pair of slacks.”
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| clothing noun generally | slacks | Plural-form noun. |
| one garment | a pair of slacks | Count one pair. |
| several garments | pairs of slacks | Count multiple pairs. |
Quick tests
Plural-choice test
Are you using “slacks” for the trouser-like garment?
If yes: Use plural “slacks”; one garment is “a pair of slacks.”
If no: Use the grammar of the other “slack” sense.
Caveat: Cambridge labels the term US or old-fashioned in UK use; present that neutrally rather than declaring it universally outdated.
Examples
His gray slacks are freshly pressed.
The clothing noun takes plural agreement.
She bought a pair of slacks for work.
One garment is counted as a pair.
They packed two pairs of slacks.
Several garments are counted with “pairs.”
Further guidance
Core difference
Use plural “slacks” for the garment and count garments with “pair/pairs.”
Fast Test
If you are counting garments, count pairs rather than inventing routine singular clothing “a slack.”
Usage Boundary
Regional/register preferences affect word choice, not the pair-based number grammar of this clothing sense.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- SLACKS | English meaning - Cambridge Dictionary (opens in a new tab)Cambridge University Press · Cambridge labels slacks a plural expression/noun for trousers and illustrates a pair of slacks, while marking usage as US or old-fashioned in UK treatment.