English Reference
adjective

hardened

adj.
US /ˈhɑɹdənd/ UK /hˈɑːdənd/ hard·ened

  1. 01 B2 Upper Intermediate

    used to something difficult or unpleasant so that it no longer affects you.

    having become accustomed or desensitised to unpleasant experiences through prolonged exposure.

    Simple

    The hardened reporter didn't seem bothered by the chaos around him.

    In context

    After years working in the emergency department, she had become hardened to the sight of trauma, maintaining a professional distance that others found difficult.

    Usage

    Often followed by the preposition 'to'.

    inuredtoughenedaccustomed
  2. 02 B2 Upper Intermediate

    having a bad habit or way of life for so long that it is unlikely to change.

    firmly established in a specific behaviour or lifestyle, typically one viewed negatively by society.

    Simple

    The police described the suspect as a hardened criminal with a long record.

    In context

    The judge noted that the defendant was a hardened offender who had shown no inclination toward rehabilitation despite numerous previous convictions.

    inveteratechronicconfirmed
  3. 03 C1 Advanced Technical Military

    made stronger or more protected against an attack.

    reinforced or protected against physical or digital assault; highly fortified.

    Simple

    The soldiers stayed inside a hardened bunker during the air raid.

    In context

    The facility was housed in a hardened underground complex designed to withstand a direct hit from conventional explosives.

    Teacher's tip

    In modern contexts, this is frequently used in computing to describe software or servers that have been secured against hackers.

  4. 04 B2 Upper Intermediate

    made very hard or solid.

    having been made physically hard, tough, or rigid through a specific process.

    Simple

    The hardened clay was difficult to break even with a hammer.

    In context

    The workers applied a layer of hardened resin to the surface to ensure it would remain waterproof for several decades.

    solidifiedstiffened

However, in arid regions such as Arizona and the Negev Desert , where Tzafit Canyon lies, the dry ground tends to form hardened crusts that make it harder for the water to sink in.

The Conversation· 3 Sept 2026

The thought of being killed like his brother-in-law hardened his resolve to be the one holding the gun.

The Guardian· 25 Aug 2026
This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated