noncommittal

形容词 noncommittal:

1. refusing to bind oneself to a particular course of action or view or the like

1. I asked him if he approved of our plan, but he was noncommittal.
   我问他是否赞同我们的计划，但他态度不明朗。
2. He was rather noncommittal.
   他说得很活络。
3. An intentionally noncommittal or ambiguous statement.
   暧昧的回答，故意的不信任故意说得模棱两可的话，不明确的话

non.com.mit.tal

adj.（形容词）
Refusing commitment to a particular opinion or course of action; not revealing what one feels or thinks:
态度暖昧的：拒绝赞成某一特殊意见或行动步骤的；不表明某人的所感或所想的：
例句：
.His face was the color of a freshly baked pork pie and as noncommittal.(Thomas Pynchon)
.他的脸色象刚刚烤过的猪肉饼，而且表情暖昧.(托马斯·平琼)

【引伸】
non.commit.tally
adv.（副词）