Simple past tense and past participle of kibitz.(verb)
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Use "kibitzed" in a sentence
"He "kibitzed" with customers during business hours, Stuart recalled, and at night kept the café open for Financial District buildings 'janitorial staff."
"Aware that these were hardly the typical purchases of a heavily bearded, dark-haired young man, Zazi—who had lived in the States since the age of fourteen—kibitzed easily with the counter staff, joking that he had to buy such large quantities of hair products because he “had a lot of girl friends.”"
"As the grownups gave their speeches, the bushy-haired and Gumby-limbed Hamish Linklater—of last summer's "Winter's Tale" and "The Merchant of Venice"—kibitzed with Lauren Ambrose, who starred in "Romeo & Juliet" in 2007."