IPA: //kwɪdˈnʌŋk//
KK: /kwɪdˈnʌŋk/
A person who is very interested in knowing the latest news or gossip, often to the point of being intrusive.
At the party, she was the quidnunc, always asking about everyone's business.
Quidnunc is derived from the Latin phrase "quid nunc" (meaning "what now?"). It refers to a person who is eager to know the latest news or gossip, essentially someone who is always asking what is happening at the moment.
Imagine someone constantly asking 'what now?' — that's how you remember that a quidnunc is a person who is always curious about the latest news.
No commonly confused words.