Game concept
Defeat
From the game's encyclopedia
Defeat is one of three possible Peace Offers. The exact outcome of Defeat in a War depends on the Casus Belli, but defeated Defenders typically lose Titles within the War Target region, whereas defeated Attackers instead lose things like Gold, Prestige and Piety.
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Defeat is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Defeat is one of three possible Peace Offers." It is part of Peace. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.