hazaña
feat
haz
do (imperative of hacer)
+
-aña
noun suffix
Hazaña means feat and can be thought of as something you do0 (haz0, imperative of 'hacer') that becomes a noun1 (-aña1) describing an impressive accomplishment.
noun
- featA heroic or extraordinary deed or achievementSu hazaña de escalar el Everest impresionó a todos. // His feat of climbing Everest impressed everyone.