adjective Foiled, stopped, disappointed. (Can we add an example for this sense?) (clarification of this definition is needed)
adjective Suffering from frustration; dissatisfied, agitated, discontent and/or slightly angry because one is unable to perform an action or fulfill a desire, or something happened or someone else did something in a way one did not hope for, expect, or desire.
She easily gets frustrated when it comes to financial matters.
adjective Imperfect form of execution of a crime in that, despite performing all the acts that should produce it, the crime fails to be consummated.
A frustrated robbery may financially cripple the company or lead it to recover; a frustrated homicide or murder leaves the victim injured or wounded, not killed.