fallar
1. (Law.) To give sentence, to judge.
2. To ruff (naipes), to trump, to win a trick with trumps.
impersonal
3. To be deficient or wanting.
verb neuter
4. To fail (cosecha, freno, memoria); to go wrong (plan); to miss (tiro); to break (apoyo, cuerda); to misfire (fusil). (n)
Algo falló en sus planes -> something went wrong with his plans