The term 'refused to cooperate' can be summarized by two crossword solutions: 'balked' (6 letters) and 'STONEWALLED' (11 letters). Both terms refer to a refusal to cooperate, but they have slightly different connotations. 'Balked' implies that the refusal was sudden or unexpected, while 'STONEWALLED' suggests that the refusal was intentional and sustained. In either case, the refusal to cooperate is a form of resistance.