frustrate
//ˈfrʌstreɪt//
Verb
frustrateInfinitive
frustratePresent tense
frustratedPast tense
frustratedPast participle
frustratingPresent participle
frustratesThird-person singular
1
to cause someone to feel upset, annoyed, or discouraged because they are unable to achieve what they want
The slow internet connection frustrated him when he was trying to finish his work.
2
to prevent a plan, effort, or action from succeeding or being fulfilled
Bad weather frustrated our plans for a picnic.