ninguna

Untranslatable word.

Cotilla / cotillear(verb) = gossip, gossipmonger, curiosity about other people's business; also used to describe such actions as listening in on other people's conversation, reading other people's mail, etc.
Never a positive action, but in some circles is perfectly acceptable behaviour.
Cotilla is the mainstay of most madrileño conversations.
The word can hardly be translated as mentioned on www.softdoc.es/madrid_guide/info/untranslatable.html

'Geläster', 'Gerüchte' are but two of its meanings in German -'erlauschen', 'abhören', etc as two of the meanings of cotillear as well.

HTH