frus·trate 
/ˈfrʌˌstreɪt/ verb
frus·trates; frus·trat·ed; frus·trat·ing /ˈfrʌˌstreɪt/ verb [+ obj] 1 : to cause (someone) to feel angry, discouraged, or upset because of not being able to do something
▪ It frustrated him to miss so many games because of injuries. ▪ We've been frustrated by bureaucratic delays. 2 : to prevent (efforts, plans, etc.) from succeeding
▪ Bureaucratic delays have frustrated our efforts to resolve this problem. : to keep (someone) from doing something ▪ The lack of investors has frustrated them in their efforts to expand the company.
▪ It frustrated him to miss so many games because of injuries. ▪ We've been frustrated by bureaucratic delays.
▪ Bureaucratic delays have frustrated our efforts to resolve this problem. : to keep (someone) from doing something ▪ The lack of investors has frustrated them in their efforts to expand the company.
