From Longman Dictionary of Contemporary Englishout of handout of handREFUSEwithout even stopping to consider what someone has suggested, asked for etcreject/dismiss/refuse etc something out of hand Aromatherapy was dismissed out of hand by traditional doctors. → hand
Examples from the Corpus
reject/dismiss/refuse etc something out of hand• After dismissing it out of hand, the neighbor called back the same night and said it might be worth considering. 