The right one . Unreasonable or clever person, rude and brusque, always grumpy, often does not speak but emits primitive sounds.
It means shy, completed. Person who is afraid to share with others. Pusillanimous, apocalyptic.
Silly and insecure, not daring to talk more because you know silly.
For me is a person blend of Zamandungo, Zanguango, Zaborro, Zopenco and something dunce. It is individualistic and sordillo.