verb

prevent (a plan or attempted action) from progressing, succeeding, or being fulfilled.

the rescue attempt was frustrated by bad weather

thwart,defeat,foil,block,stop,put a stop to,counter,spoil,check,balk,circumvent,disappoint,forestall,bar,dash,scotch,quash,crush,derail,nip in the bud,baffle,nullify,snooker,obstruct,impede,hamper,hinder,stifle,fetter,hamstring,cripple,put a brake on,stand in the way of,spike someone’s guns,stymie,foul up,screw up,put the kibosh on,put the lid on,banjax,do for,scupper

adjective

frustrated.