S: (v) thwart, queer, spoil, scotch, foil, cross, frustrate, baffle, bilk (hinder or prevent (the efforts, plans, or desires) of) "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"
S: (v) itch, spoil (have a strong desire or urge to do something) "She is itching to start the project"; "He is spoiling for a fight"