Adjective:

1. not burdened with difficulties or responsibilities;

   "unburdened by an overarching theory"
   

2. not encumbered with a physical burden or load

burdenlessadj.无担子的; 无负担的

burdenedadj.负荷的动词burden的过去式和过去分词形式.

1. Jane unburdened herself to the teacher.
   珍妮向老师倾吐了自己的心事。
2. He unburdened himself to me.
   他向我吐露心事。
3. Susan unburdened herself of her terrible secret.
   苏珊把藏在内心的可怕秘密全盘托出，解除了心理上的负担。