To insincerely concede in a pointless argument, in spite of a perfectly validcounterpoint or factual assertion
After hours of disputing her account of what she'd said & when, he finally just decided to capitulate, as it was clear the actual events had no bearing on her side of the story.
Better than "BOW to the tyrant." It's like the fancy version of "kowtowing."
Hym "Don't capitulate to HIM! Capitulate to ME! And not ME Hym but-Oh shit... Wait... Yes ME Hym but not HIM him? Yeah... Or wait... I mean... Don't NOT capitulate to ME Hym and Don't capitulate to HIM him... Right!?"