The term 'walk in a resolute manner' can be summarized as marching with determination. The crossword solution for this term is 'MARCH, ' which is a verb meaning to move forward in a steady, determined way. This term is often used to describe a military formation, where soldiers MARCH in a straight line with their heads held high and their steps in sync. It can also be used to describe a person's attitude when they are determined to reach a goal.