frustrated

Adjective

Synonyms: defeated disappointed discomfited foiled thwarted

WordNet 3.0

Adjective (1)

disappointingly unsuccessful“disappointed expectations and thwarted ambitions”“their foiled attempt to capture Calais”“many frustrated poets end as pipe-smoking teachers”“his best efforts were thwarted”Synonyms: defeated disappointed discomfited foiled thwarted

Webster's Dictionary (GCIDE)

Frustrate \Frus"trate\, v. t. [imp. & p. p. Frustrated; p. pr. & vb. n. Frustrating.]

1.To bring to nothing; to prevent from attaining a purpose; to disappoint; to defeat; to baffle; as, to frustrate a plan, design, or attempt; to frustrate the will or purpose. [1913 Webster]

Shall the adversary thus obtain His end and frustrate thine ?— Milton.[1913 Webster]

2.To make null; to nullifly; to render invalid or of no effect; as, to frustrate a conveyance or deed.

Syn: To balk; thwart; foil; baffle; defeat. [1913 Webster]