gossip

gossip 1

• noun

1 [C,U] conversation or writing about other people's behaviour and private lives, often including unkind or untrue remarks:
?People love hearing gossip about film stars.
2 [C] someone who likes talking about other people's private lives

gossip 2

• verb [I]
• 

to talk or write about other people's behaviour and private lives:
?gossip about: What are you two gossiping about?