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general::
Phrase(s): welsh on someone
to renege on a bet or an agreement made with someone. (Also spelled welch.) • You had better not welsh on me if you know what is good for you. • Max welshed on the mob boss and made a lot of trouble for himself., Phrase(s): welsh on something (with someone)
to renege on a bet or agreement made with someone. (Also spelled welch.) • Max welshed on his bet with Lefty. That was not a wise thing to do. • It is not wise to welsh on a bet.
McGrawhill's American Idioms And Phrasal Verbs