you're such a dark horse! you never told me that once you played football professionally: hain misteriotsua zara! inoiz ez didazu esan futbol-jokalari profesionala izan zinenik
(inf) (ia) ezer ez jakin; ezer ez adierazi, ezkutuan gorde [isilpean gorde nahi delako]
the conference complained about being kept in the dark about the peace talks: batzarra kexu agertu zen bake-elkarrizketen gaineko informaziorik eman ez zaiolako
