词根：varic- = to straddle 跨坐, 横跨, 跨越

  词根varic来源于拉丁语的varic 意为to strade。

prevaricate [使事先观望pre(=before) + varic(=straddle)]
  vi.说谎；含糊其辞，推诿；支吾
  prevarication n.说谎；支吾
  Most young children will prevaricate to avoid punishment.大多数小孩儿都会为躲避惩罚而说谎。