Stonewall

['stəʊnwɔːl;stəʊn'wɔːl] or ['ston'wɔl]

Definition

(verb.) engage in delaying tactics or refuse to cooperate; 'The President stonewalled when he realized the plot was being uncovered by a journalist'.

(verb.) obstruct or hinder any discussion; 'Nixon stonewalled the Watergate investigation'; 'When she doesn't like to face a problem, she simply stonewalls'.

Checked by Lemuel--From WordNet