-aco

See also: Appendix:Variations of "aco"

Latin

Suffix

-ācō

1. dative/ablative masculine/neuter singular of -ācus

Suffix

-acō

1. dative/ablative masculine/neuter singular of -acus

Portuguese

Etymology 1

Suffix

-aco (adjective-forming suffix, feminine -aca, masculine plural -acos, feminine plural -acas)
-aco m (noun-forming suffix, plural -acos, feminine -aca, feminine plural -acas)

1. a suffix to make nationalities and demonyms

   ‎Áustria + ‎-aco → ‎austríaco (“Austrian”)

Etymology 2

Suffix

-aco m (noun-forming suffix, plural -acos)

1. a pejorative suffix

   ‎velho (“book”) + ‎-aco → ‎velhaco (“rogue, rascal”)

Derived terms

Portuguese terms suffixed with -aco

austríaco

bibliomaníaco

cavaco

ilíaco

ninfomaníaco

piromaníaco

velhaco

Further reading

• “-aco”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2025
• “-aco”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2025

Spanish

Etymology 1

Suffix

-aco (adjective-forming suffix, feminine -aca, masculine plural -acos, feminine plural -acas)
-aco m (noun-forming suffix, plural -acos, feminine -aca, feminine plural -acas)

1. a suffix to make nationalities and demonyms

   ‎Austria + ‎-aco → ‎austriaco (“Austrian”)

Etymology 2

Suffix

-aco m (noun-forming suffix, plural -acos)

1. a pejorative suffix

   ‎libro (“book”) + ‎-aco → ‎libraco (“worthless/throwaway book”)

Related terms

• -arraco

Derived terms

Spanish terms suffixed with -aco

austriaco

hipomaníaco

libraco

marraqueta

ninfomaníaco

policíaco

Further reading

• “-aco”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025