Definition of "welched" [welched]

• Simple past tense and past participle of welch. (verb)

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• "When Bush suggested the Moon, he welched on his funding promise."
• "The Arab League asked the UN for help to beef up the mission, but, with due respect to the Arab League's enterprise that was limited in scope in the first place, what, pray tell would a few more UN-issued helmets and flak jackets accomplish given how Assad just figuratively lobbed his shoe at the Arab League and welched on his own pledges to the League during the League's recently ineffective observer deployment?"
• "Lines got crossed, deals were welched on, cheaters were cheated, witnesses were eliminated — so much so that on any given day in any given part of town, any outlaw might have reason for killing any other."