denfermer
Denfermer is not a standard term in French, English, or major dictionaries. In contemporary usage it is typically seen as a misspelling or a typographical variant rather than a recognized word. When it appears, its meaning is not established, and it should usually be corrected to a known form.
Most commonly, denfermer is understood as a mistaken form of the French verb enfermer, meaning to enclose
Etymology and sense: enfermer comes from en- a prefix indicating inclusion or containment, plus fermer, meaning
Usage notes: If you encounter denfermer in a text, it is prudent to treat it as a