Simple past tense and past participle of dicker.(verb)
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Use "dickered" in a sentence
"We ate chow-chow with chop-sticks in the celestial restaurants; our comrade chided the moon-eyed damsels in front of the houses for their want of feminine reserve; we received protecting Josh-lights from our hosts and "dickered" for a pagan God or two."
"Though only 2 percent of respondents dickered online, those who did were just as successful overall as the in-store negotiators."
"And while chivalry committed suicide over its ladies 'gloves, the stout, wooden-headed burghers, with an eye to the facts of life, dickered and bickered in trade."