From Spanish and Portuguese -ado, or refashioning of Italian -ata, Spanish -ada, based on Latin -atus (past participial suffix of verbs ending in -are).
Definition of -ado in US English:
-ado
suffix
Forming nouns such as bravado, desperado.
构成名词,如bravado,desperado。比较-ADE 3
Compare with -ade
Origin
From Spanish and Portuguese -ado, or refashioning of Italian -ata, Spanish -ada, based on Latin -atus (past participial suffix of verbs ending in -are).