To comment during a game, or during analysis following a game, within the hearing of the players. A kibitzer is one who kibitzes - this is can be a derogatory term.
To watch a game or comment it being heard by players.
to 'ave a look on and offer unsolicited, meddlesome advice; ter make wisecracks wen uvvers are tryin' ter work or speak straight up.
To watch a match and listen to what is going on. A great way to learn how to play and improve your game is to kibitz a match with two strong players.
To comment during a game, or during analysis following a game, within the hearing of the players. The term is often used in a pejorative sense, and is in many occasions applied to the comments of a spectator for whom the players have little respect.
As a spectator, making comments on a chess game that can be heard by the players. Kibitzing on serious games is considered bad manners.
to look on and offer unsolicited, meddlesome advice; to make wisecracks when others are trying to work or speak seriously.
to offer advice as a spectator - a dangerous pastime.