What the thing is
A petticoat is a skirt-like garment worn under a dress or skirt—or, historically, as outerwear. In current British English, it is a light loose undergarment hanging from the shoulders or waist.
Where it came from
It emerged in Western fashion systems by the 14th century. By 1585, it was documented as an undergarment. Men wore padded versions in the 15th–17th centuries; women across all classes wore them in the 18th century.
What it gets right
It names a garment that served dual roles: visible outerwear and functional undergarment. It shaped skirts, added warmth, and adapted across classes and genders.
What it gets wrong
It implies continuity where there was rupture—calling all skirt-like layers ‘petticoats’ flattens distinct garments with different structures, purposes and social meanings.
Why it matters now
It reveals how a single term obscures material diversity—and how language lags behind function, gender and use. Its political echoes (‘petticoat government’, ‘Petticoat affair’) persist without explanation.
Is it worth your time
Yes—if you care how clothing quietly encodes power, class and gender across centuries.
