quebrantar
break
quiebra
bankruptcy
+
-ar
verb suffix
Quebrantar means to break and can be related to quiebra0 (bankruptcy0), as bankruptcy often involves breaking financial obligations, plus -ar1 (verb suffix1).
verb
  1. break
    To break, violate, or infringe upon
    No debes quebrantar las reglas del juego. // You must not break the rules of the game.
  2. weaken
    To weaken or undermine
    La enfermedad quebrantó su salud. // The illness weakened his health.