Dark Horse

A dark horse is a little-known person or thing that emerges to prominence, especially in a competition of some sort or a contestant that seems unlikely to succeed.

Read more about Dark Horse:  Origin, In The Political Arena, Use in Music and Film, Use in Publishing

Famous quotes containing the words dark and/or horse:

    “Life is the lust of a lamp for the light that is dark till the dawn
    of the day when we die.”
    —A.C. (Algernon Charles)

    “When a horse comes to the edge of the cliff, it is too late to draw rein; when a boat reaches midstream, it is too late to stop the leaks.”
    —Chinese proverb.