boca a boca

Portuguese

Alternative forms

• boca-a-boca (pre-1990 spelling)

Noun

boca a boca m (uncountable)

1. mouth-to-mouth (breathing into a person’s mouth as a first-aid technique)

   Synonym: respiração boca a boca

2. word of mouth (verbal, personal transmission of information)

Further reading

• “boca a boca”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “boca a boca”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

Spanish

Noun

boca a boca m (uncountable)

1. (idiomatic) word of mouth
2. (idiomatic) mouth-to-mouth (breathing into a person’s mouth as a first-aid technique)

See also

• de boca en boca

Further reading

• “boca a boca”, 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