to prevent (somebody) from carrying out a plan or intention
to prevent (e.g. a plan) from being carried out or (e.g. a hope) from being realized
to induce feelings of discouragement and vexation in (somebody)
frustrated adj
frustrating adj
frustratingly adv
frustration noun
[Middle English frustraten from Latin frustratus, past part. of frustrare to deceive, frustrate, from frustra in error, in vain]