StatNis.68.2 :ܣܥܐ ܡܪܚܐܝܬ ܘܐܘܩܕ ܐܢܝܢ ܒܢܘܪܐ‏ : act boldly and burn them in fire
See the entire entry for marrāḥāˀīṯ adv. boldly