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:
“For as she eats wisdom like the halves of a pear she puts one foot in front of the other. She climbs the dark wing.”
—Anne Sexton (19281974)
“I will sing to the LORD, for he has triumphed gloriously; horse and rider he has thrown into the sea.”
—Bible: Hebrew, Exodus 15:1.