Word: harden
Phonetic:
/ˈhɑːdn̩/
Listen:
To become hard (tough, resistant to pressure).
To make something hard or harder (tough, resistant to pressure).
To strengthen.
To modify (a website or other system) to make it resistant to malicious attacks.
To become or make (a person or thing) resistant or less sensitive.
To become or make (a consonant) more fortis.
You can find a list of possible crossword clues for HARDEN below.