verb🔗ShareTo become hard (tough, resistant to pressure)."The clay hardens as it dries in the sun. "materialphysicschemistryChat with AIVocabulary GamePractice Reading
verb🔗ShareTo make something hard or harder (tough, resistant to pressure)."The cement mixture hardens and becomes like stone after a few hours. "materialphysicschemistryscienceprocessconditionChat with AIVocabulary GamePractice Reading
verb🔗ShareTo strengthen."Daily exercise hardens the athlete's muscles, making them stronger. "actionprocessabilityChat with AIVocabulary GamePractice Reading
verb🔗ShareTo modify (a website or other system) to make it resistant to malicious attacks."The IT department hardens the company's servers against cyber threats by updating security software and limiting access. "computinginternettechnologysystemChat with AIVocabulary GamePractice Reading
verb🔗ShareTo become or make (a person or thing) resistant or less sensitive."Dealing with rude customers all day slowly hardens her to their insults. "mindbodycharacteremotionphysiologyChat with AIVocabulary GamePractice Reading
verb🔗ShareTo become or make (a consonant) more fortis."In some dialects, the "t" in "water" hardens to sound more like a "d." "phoneticslanguagelinguisticsChat with AIVocabulary GamePractice Reading
