1) Agonise 2) Ail 3) Fret 1) Agonise 2) Anguish 3) Be in the hot seat 4) Cause to 5) Cause to agonize 6) Consider a tough decision 7) Go through hell 8) Have a hard time 9) Have a hellish time deciding 10) Have trouble deciding 11) Hurt 12) More than just worry 13) Pain 14) Put forth great effort 15) Rack 16) Really struggle 
• (v. i.) To writhe with agony; to suffer violent anguish. • (v. i.) To struggle; to wrestle; to strive desperately. • (v. t.) To cause to suffer agony; to subject to extreme pain; to torture.
Ag'o·nize intransitive verb [ imperfect & past participle Agonized ; present participle & verbal noun Agonizing ] [ French agoniser , Late Latin agonizare , from Greek .... See Agony .] 1. To writhe with ag...Ag'o·nize transitive verb To cause to suffer agony; to subject to extreme pain; to torture. « He agonized his mother by his behavior. Thackeray. » 
[v] - cause to agonize 2. [v] - suffer agony or anguish
agonize 1. To make convulsive efforts; struggle. 2. To be in agony; to be in great pain. 3. To contend in the arena; to struggle or strive in physical exercise; to wrestle.
agonise verb suffer agony or anguish