adj.无知的；愚蠢的；发疯的
"But do let her go, Jacky," coaxed his poor witless wife. “可是你非叫她去不可，捷奇，”他那位头脑简单，智力低下的太太甜言蜜语地说。
The assassination attempt that failed in July 1944 was witless and traitorous. 1944年7月以失败而告终的那个暗杀企图即无头脑，又失信义。
