What are warp and weft?

The warp is usually the more stable direction. A garment that twists often has the pattern placed off that grain.

Denim, poplin, and twill are all warp-and-weft cloths. Their differences are the crossing pattern and the yarn, not a different loom principle.

“What are warp and weft?” is the only question this page answers. The short answer is: Warp yarns are held lengthwise on the loom. Weft yarns cross them from selvedge to selvedge. A weave is the pattern those two sets make. Knits do not have a warp and weft in the same sense; they are loops.

The points to keep are Warp is lengthwise. Weft is crosswise. The pattern of their crossing is the weave.

Related terms that belong here, and not as a keyword list, are weaving yarns, lengthwise yarns. Use them when they describe the same decision.

If the next step is a cloth rather than a definition, open the marketplace or the collection linked below and read the published composition and construction. This page does not add a price, a certificate, or a supplier count.

Care, weight, and sourcing only matter here when they change the answer to warp and weft. Otherwise leave them on the guide that already owns that subject.

This page answers “What are warp and weft?” and stops there. It does not rank warp and weft against every other cloth, and it does not turn weaving yarns, lengthwise yarns into a shopping list.

Take the answer to a fabric page when you need composition, construction, or a published weight. Leave any cell blank that the fabric page leaves blank.

The marketplace is the catalog. A question page is the explanation. Share the question URL when the reader needs the definition, and the fabric URL when the reader needs the cloth.

Related language that stays on this question, rather than on a neighbouring page, is weaving yarns, lengthwise yarns. Use those words only when they describe the same decision.