Sentences with Harden

Long hours of practice allowed the musician's fingers to harden, resulting in precise and swift movements on the piano keys.

The old book's pages had begun to harden over time, showcasing the effects of aging and exposure to air.

The carpenter applied a special coating to harden the wood, protecting it from decay and insect infestations.

The gardener implemented measures to harden the plants against pests and diseases, ensuring a healthy garden.