transitive verb frustrated -·trat′ed, frustrating -·trat′·ing

1. to cause to have no effect; bring to nothing; counteract; nullify to frustrate plans
2. to prevent from achieving an objective; foil; baffle; defeat to frustrate an opponent
3. Psychol. to prevent from gratifying certain impulses or desires, either conscious or unconscious

Etymology: ME frustraten < L frustratus, pp. of frustrare, frustrari, to disappoint, deceive < frustra, in vain: for IE base see fraud

intransitive verb

adjective