English Reference
adjective · noun · adverb

hardcore

adj. · n. · adv.
US /ˈhɑɹdˈkɔɹ/ UK /hˈɑːdkɔː/ hard·core

  1. 01 B2 Upper Intermediate Informal

    adj.showing a very strong and serious commitment to an activity or group.

    adj.characterised by extreme dedication or unwavering commitment to a specific cause, activity, or subculture.

    Simple

    He is a hardcore fan who travels to every single game his team plays.

    In context

    The hardcore supporters remained in the stands despite the torrential rain, chanting until the final whistle blew.

    casualhalf hearted
  2. 02 B2 Upper Intermediate Informal

    adj.very intense, tough, or demanding extreme effort.

    adj.highly intense, rigorous, or demanding; often used to describe physical training or difficult environments.

    Simple

    That mountain bike trail was pretty hardcore with all those steep drops.

    In context

    The special forces undergo a hardcore training regime designed to push their physical and mental endurance to the absolute limit.

  3. 03 C1 Advanced Formal

    adj.showing or describing sexual acts or violence in a very detailed and direct way.

    adj.depicting sexual acts or violence in an explicit, graphic, or unmitigated manner.

    Simple

    The movie was rated R because it contained some hardcore violence.

    In context

    The documentary was criticised for including hardcore footage of the conflict that many viewers found unnecessarily graphic.

    softcoremild
  4. 04 B2 Upper Intermediate Informal Music

    n.a style of music that is faster and louder than usual, like hardcore punk or techno.

    n.a subgenre of punk rock or electronic dance music characterised by faster tempos and higher intensity.

    Simple

    She loves listening to hardcore when she needs a lot of energy at the gym.

    In context

    The club specialised in hardcore, attracting a niche audience that appreciated the aggressive percussion and rapid-fire BPM.

  5. 05 C2 Proficiency TechnicalBritish English

    n.broken bricks or stones used to make a solid base for a road or building.

    n.mass of solid, not easily compressed material such as broken bricks or stone used as a foundation.

    Simple

    The builders laid a layer of hardcore before pouring the concrete for the driveway.

    In context

    The specifications required a six-inch layer of compacted hardcore to ensure the stability of the new access road.

  6. 06 C1 Advanced Slang

    adv.doing something in a very intense or extreme way.

    adv.acting in an intense, extreme, or uncompromising manner; functions as an intensifier.

    Simple

    They were partying hardcore until four in the morning.

    In context

    The team went hardcore on the final project, staying in the office for thirty-six hours straight to meet the deadline.

Some guys, more hardcore than me, would hang a pack off each hip then swagger round like a western gunslinger.

The Guardian· 25 Aug 2026

From hard + core: hard to the core; 1936 (n.); 1951 (adj.)

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated