aimlessness

n.the quality of lacking any definite purpose

同义词：purposelessness

1. His aimlessness in life led him to feel lost and unfulfilled.
   他在生活中的漫无目的使他感到迷失和无所成就。
2. The aimlessness of their wanderings made them realize they needed to set goals.
   他们漫无目的的游荡让他们意识到需要设定目标。