evert
Word family
Synonym discussion
Sense: verb/1
'Evert' is a very formal verb for turning something so the inner surface faces outward. It is especially common in medicine, where a doctor may evert an eyelid, a lip, or the edge of a wound. 'Invert' is also formal, but it is broader: it can describe turning something upside down, reversing order, or flipping a shape in science or maths. 'Turn inside out' is the everyday phrase for clothes, bags, and similar objects. 'Fold back' focuses on bending a layer away, but it does not always mean the inner side ends up on the outside. You might evert an eyelid in a clinic, invert a bottle in an experiment, and turn a sock inside out before washing it.
Common collocations
Etymology
'Evert' came into English from Latin 'evertere', built from 'e-' meaning 'out' and 'vertere' meaning 'turn'. Earlier uses could mean overturning something, but the modern formal sense narrowed to turning a part outward so its inner side shows. That history matches current medical use, where an eyelid, lip, or wound edge is turned out for checking or treatment.
First known use
1533
1533, in the meaning defined at sense 1