unsuspecting
adj. 不怀疑的;未猜想到……的
例句
He had crept up on his unsuspecting victim from behind.
他从背后悄悄逼近了那毫无戒备的受害者。
《牛津词典》
She threw a surprise party for her unsuspecting husband.
她为她毫不知情的丈夫举办了一个惊喜聚会。
《柯林斯英汉双解大词典》
She fixes her steel-blue eyes on an unsuspecting local official.
她用那双铁青色的眼睛紧盯着一名毫无猜疑心的地方官员。