adjective/sixiˈloso/
sneaking, stealthy; discreet; secretive
Synonyms: arcano, escondido, recóndito, discreto, secreto
Etymology tree Spanish sigilo Proto-Indo-European *h₃ed- Proto-Indo-European *-os Proto-Indo-European *h₃édosder.? Proto-Italic *-ŏ̄dsos? Old Latin -ōssus Latin -ōsus Old Spanish -oso Spanish -oso Spanish sigiloso From sigilo + -oso.