To hinder or prevent (the efforts, plans, or desires) of.
hinder or prevent (the efforts, plans, or desires) of; thwart
a crosspiece spreading the gunnels of a boat; used as a seat in a rowboat
to hinder or prevent (the efforts, plans, or desires) of: "What ultimately frustrated every challenger was Ruth's amazing September surge."
hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth''s amazing September surge"; "foil your opponent"
hinder or prevent (the efforts, plans, or desires) of