macizo
adv.
quickly, fast
adj.
massive; chunky, solid
macizo (m)
n.
mass; chunk; clump; massif, group of mountains (French); flowerbed, gardenbed; section of a wall
macizar
v.
fill up, make full
macizo
= rock solid.
Ex: The numbers in the ad, which are quite eye-opening, are rock-solid.
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* de oro macizo = solid-gold.