'Frustrate' definitions:

Definition of 'frustrate'

From: WordNet
verb
Hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent" [syn: thwart, queer, spoil, scotch, foil, cross, frustrate, baffle, bilk]
verb
Treat cruelly; "The children tormented the stuttering teacher" [syn: torment, rag, bedevil, crucify, dun, frustrate]

Definition of 'Frustrate'

From: 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]

Definition of 'Frustrate'

From: GCIDE
  • Frustrate \Frus"trate\, a. [L. frustratus, p. p. of frustrare, frustrari, to deceive, frustrate, fr. frustra in vain, witout effect, in erorr, prob. for frudtra and akin to fraus, E. fraud.] Vain; ineffectual; useless; unprofitable; null; voil; nugatory; of no effect. "Our frustrate search." --Shak. [1913 Webster]