cotillear bedeutet auf Englisch

blab [blabbed, blabbing, blabs]▼(tell tales)
verb
[UK: blæb] [US: blæb]

blabber▼(to let out a secret)
verb
[UK: ˈblæ.bə(r)] [US: ˈblæ.bər]

chit-chat▼(to engage in small talk)
verb
[UK: ˈtʃɪt tʃæt] [US: ˈtʃɪt tʃæt]

gossip [gossipped, gossipping, gossips]▼(to talk about someone else's private or personal business)
verb
[UK: ˈɡɒ.sɪp] [US: ˈɡɑː.səp]I wonder what they're gossiping about. = Me pregunto sobre qué estarán cotilleando.