verb [VN]
1 to make sb feel annoyed or impatient because they cannot do or achieve what they want:
What frustrates him is that there's too little money to spend on the project.
2 (written) to prevent sb from doing sth; to prevent sth from happening or succeeding:
The rescue attempt was frustrated by bad weather. * He tried to frustrate his political opponents by denying them access to the media.
