feeling or showing distress and annoyance resulting from inability to change or achieve something

निराश

English Usage: She felt frustrated at not being able to solve the problem.

Hindi Usage: उसे समस्या हल न कर पाने पर निराशा महसूस हुई।

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

विफल करना

English Usage: The delays in the project frustrated their efforts to meet the deadline.

Hindi Usage: परियोजना में देरी ने उनकी समयसीमा को पूरा करने के प्रयासों को विफल कर दिया।