/ frʌˈstreɪʃn; NAmE / noun
1.
[ U ] the feeling of being frustrated :
Dave thumped the table in frustration .
She couldn't stand the frustration of not being able to help.
sexual frustration
2.
[ C , usually pl. ] something that causes you to feel frustrated :
Every job has its difficulties and frustrations.
Inevitably she took out her frustrations on the children.
3.
[ U ] frustration of sth ( formal ) the fact that sth is preventing sth/sb from succeeding :
the frustration of all his ambitions
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WORD ORIGIN
mid 16th cent.: from Latin frustratio(n-) , from frustrare disappoint, from frustra in vain.