Wiktionary
welshing
vb. (present participle of welsh English)
Usage examples of "welshing".
Scott experienced a severe though momentary sinking of heart and even for one wildly frivolous moment considered welshing on the verbal agreement he'd just made.
Namely, because Uncle Sam, thanks to Buddy Gabaldon, had shelled out a couple of hundred dollars to Snuffy Ledoux as an advance against all those Smokey the Bears Snuffy planned to produce, and here was Snuffy welshing on his word.
Bush's welshing on the two candidates' public handshake-agreement in January to run a bilaterally positive campaign.