Definitions for kibitzerˈkɪb ɪt sər
Random House Webster's College Dictionary
kib•itz•er*ˈkɪb ɪt sər(n.)
a spectator at a card game who reads the players' cards over their shoulders, often giving unsolicited advice.
a giver of unsolicited advice.
a person who jokes or chats, esp. while others are trying to work.
Origin of kibitzer:
1925–30; < Yiddish
(Yiddish) a meddler who offers unwanted advice to others
A person who offers unsolicited views, advice, or criticism; one who kibitzes.
Did I ask you what you thought about my card hand, you kibitzer!