Synonyms of breakneck in English:

breakneck


See US English definition of breakneck

See UK English definition of breakneck

See Spanish definition of vertiginoso

adjective

1‘the breakneck pace of technological change’

SYNONYMS
extremely fast, high-speed, lightning, whirlwind, rapid, speedy
dangerously fast, reckless, dangerous, excessive, precipitate, headlong

Phrases

    at breakneck speed


    SYNONYMS
    dangerously fast, at full speed, at full tilt, at full pelt, flat out, as fast as one's legs can carry one
    ventre à terre
    informal hell for leather, at a lick, like the wind, like a bat out of hell, like a bomb, like greased lightning
    British informal like the clappers, at a rate of knots, like billy-o