<p><strong>Verb:</strong></p><ul><li>to perplex or amaze, especially by a sudden disturbance or surprise; bewilder; confuse.</li><li>to throw into confusion or disorder.</li><li>to treat or regard erroneously as identical; mix or associate by mistake.</li><li>to mingle so that the elements cannot be distinguished or separated.</li><li>to damn (used in mild imprecations): Confound it!</li><li>to contradict or refute; to confound their arguments.</li><li>to put to shame; abash.</li><li>to defeat or overthrow (archaic).</li><li>to bring to ruin or naught.</li><li>to spend uselessly; waste (obsolete).</li></ul><p><strong>Synonyms:</strong></p><ul><li>nonplus, daze, dumbfound, astound.</li></ul>