<p><strong>Verb</strong></p><ul><li><p>(used with object):</p><ul><li>to make (plans, efforts, etc.) worthless or of no avail; defeat; nullify: The student's indifference frustrated the teacher's efforts to help him.</li><li>Synonyms: circumvent, foil, balk</li><li>to disappoint or thwart (a person): a talented woman whom life had frustrated.</li></ul></li><li><p>(used without object):</p><ul><li>to become frustrated: His trouble is that he frustrates much too easily.</li></ul></li></ul><p><strong>Adjective</strong></p><ul><li>Obsolete:<ul><li>frustrated.</li></ul></li></ul><p><strong>End of Response</strong></p>