dark horse

US /dɑrk hɔrs/
UK /dɑrk hɔrs/
"dark horse" picture
1.

kuda hitam, orang yang tidak dijangka

a person who keeps their abilities and intentions secret and who surprises people by doing something unexpected, especially by winning a competition or election

:
No one expected him to win; he was a real dark horse in the race.
Tiada siapa menjangka dia akan menang; dia adalah kuda hitam sebenar dalam perlumbaan itu.
She's a bit of a dark horse; you never know what she's going to do next.
Dia agak misteri; anda tidak pernah tahu apa yang akan dia lakukan seterusnya.