English Reference
noun · verb

haze

n. · v.
US /ˈheɪz/ UK /hˈeɪz/ haze UK spelling haze's, haze's

  1. 01 B2 Upper Intermediate

    n.a thin mist, smoke, or dust in the air that makes it difficult to see things in the distance.

    n.an atmospheric phenomenon where fine particulate matter or moisture droplets reduce visibility.

    Simple

    The mountains were hidden behind a thick blue haze of heat and dust.

    In context

    A persistent summer haze hung over the valley, obscuring the distant peaks and muting the colours of the landscape.

  2. 02 B2 Upper Intermediate

    n.a state of being confused or not being able to remember things clearly.

    n.a state of mental obscurity, confusion, or lack of clarity in perception or memory.

    Simple

    He woke up in a haze, unable to remember where he had parked his car.

    In context

    The patient described living in a constant mental haze for weeks following the concussion, struggling to perform even basic cognitive tasks.

    focuslucidity
  3. 03 C1 Advanced Technical Science

    n.the amount of cloudiness in a clear material like glass or plastic.

    n.the degree of turbidity or lack of transparency in a substance, often measured as a percentage in manufacturing.

    Simple

    The plastic screen had a slight haze that made it hard to read the text.

    In context

    Engineers measured the haze of the new polymer to ensure it met the strict transparency requirements for optical lenses.

    turbidityopacity
  4. 04 B2 Upper Intermediate American EnglishInformal

    v.to force new members of a group to do difficult, silly, or unpleasant tasks as a test.

    v.to subject newcomers to abusive, humiliating, or dangerous initiation rituals, particularly within fraternities or military units.

    Simple

    The university has strict rules to stop older students who try to haze the freshmen.

    In context

    Several members of the sports team were suspended after reports emerged that they had continued to haze new recruits despite the ban.

    Usage

    This verb is transitive and requires a direct object, usually the person being initiated.

    Teacher's tip

    This term is very common in American campus culture but is often associated with illegal or unethical bullying.

    mistreatharassbully

Historical records from Europe and Asia suggest that skies were darker than usual around that time, perhaps because of a volcanic haze.

Ars Technica· 23 Aug 2026
This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated