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endurecer

to harden, to toughen

verb en-doo-reh-SEHR Rare

Also means

to stiffen

Usage Note

Endurecer is used both literally (hardening a material) and figuratively (toughening laws, attitudes, or a person's character). It belongs to the -cer class with a spelling change: endurece (he/she hardens). The reflexive endurecerse means to become hard or to toughen up, often used for physical training or emotional resilience.

Examples

"El ejercicio físico ayuda a endurecer los músculos."

Natural Translation

Physical exercise helps to harden the muscles.

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