noun
A loanword from English, used similarly to the English word to describe the feeling of being upset or annoyed due to inability to achieve something. Common in modern Japanese, especially in psychological or everyday contexts.
仕事の遅れでフラストレーションがたまっている。
I'm building up frustration due to work delays.
彼はフラストレーションを感じて、つい大声
He felt frustration and ended up shouting.