kibitz

verb3

1. •
   To give unsolicited or unwanted advice or make unhelpful or idle comments, especially to someone playing a game.

   • Quit kibitzing! You're giving away my hand!
2. •
   To make small talk or idle chatter.

   • Louise and I used to head down to the coffee shop and just sit for hours and kibitz.
3. •
   To watch a card or board game.

   • When it was my turn to stay in the office until 11 pm. closing, I kibitzed on their poker games and heard some colorful tales. — 2012