English Reference
noun · adjective

fireball

n. · adj.
US /ˈfaɪɝˌbɔɫ/ UK /fˈaɪəbɔːl/ fire·ball UK spelling fireballs

  1. 01 B2 Upper Intermediate

    n.a large, round mass of fire and smoke caused by a sudden explosion.

    n.a spherical mass of fire and flame, typically resulting from a high-intensity explosion or the ignition of flammable gases.

    Simple

    The fuel tank exploded in a massive fireball that could be seen for miles.

    In context

    Witnesses reported a deafening roar followed by a towering fireball that consumed the warehouse in seconds.

  2. 02 B2 Upper Intermediate Informal

    n.a person who has a lot of energy, strong will, and enthusiasm.

    n.a figurative description of a highly energetic, spirited, or strong-willed individual.

    Simple

    Our new manager is a real fireball who has already changed how we work.

    In context

    Despite her age, the grandmother was a total fireball, organizing community events and hiking every weekend.

    dynamolive wire
  3. 03 C1 Advanced Technical Science

    n.a very bright meteor that looks like a ball of fire as it falls through the sky.

    n.a meteor that reaches a visual magnitude of -4 or brighter, often leaving a visible trail or exploding in the atmosphere.

    Simple

    Astronomers tracked a rare fireball as it crossed the night sky over the desert.

    In context

    The fireball was bright enough to cast distinct shadows on the ground, suggesting it was a significant bolide entering the upper atmosphere.

    bolidemeteor
  4. 04 B2 Upper Intermediate

    n.a ball of fire created by magic and thrown at an enemy in stories or games.

    n.a magical projectile consisting of fire, commonly appearing in mythology, folklore, and fantasy role-playing games.

    Simple

    The wizard cast a fireball to defeat the monsters in the cave.

    In context

    In many tabletop games, the fireball is a standard area-of-effect spell used to clear groups of low-level enemies.

  5. 05 C2 Proficiency Slang

    adj.something that is very good or impressive.

    adj.a slang term used to describe something as excellent or high-quality.

    Simple

    That new song you played is absolutely fireball.

    In context

    The party last night was fireball; everyone had a great time and the music was perfect.

In Phase 3, the meteor gets much brighter and turns into a fireball.

Phys.org· 24 Aug 2026

The noun is derived from fire (noun) + ball (noun). The adjective and verb are derived from the noun.

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

This entry
Level B2 · Upper Intermediate
Frequency Occasional
Updated