harden

1. (intransitive)To become hard.

   härten

   тверде́тьtverdétʹ, затверде́тьzatverdétʹ

   тверді́тиtverdíty, затверді́тиzatverdíty, тве́рднутиtvérdnuty

   become hard or harder

2. (ergative, transitive)To make something hard or harder.

   härten

   make hard or harder

3. (figuratively, transitive)To strengthen.

4. (transitive)To modify (a website or other system) to make it resistant to malicious attacks.

5. (ambitransitive)To become or make (a person or thing) resistant or less sensitive.

   (obs.)

   ожесточитьсяožestočitʹsja, ожесточитьožestočitʹ

6. (informal, intransitive)To get an erection.

7. (ambitransitive)To become or make (a consonant) more fortis; to (cause to) undergo fortition.

   cause to accept or become hardened to; habituate

8. To unpalatalize or velarize.

1. The heat of the sun hardens clay.

   Від сонячного тепла глина твердішає.

   ruСолнечное тепло делает глину твёрдой.

   deDie Hitze der Sonne härtet den Ton.

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2. Cement hardens in two to three hours.

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3. Tom's face suddenly hardened.

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4. Switzerland hardened its immigration policy.

   Швейцарія зробила свою іміграційну політику суворішою.

   deDie Schweiz verschärfte ihre Einwanderungspolitik.

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5. I became hardened to punishing pupils.

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