illusory

a. 产生幻觉的, 幻影的, 错觉的
【法】 因错觉产生的, 虚幻的

il.lu.so.ry

adj.（形容词）
Produced by, based on, or having the nature of an illusion; deceptive:
幻觉的，虚假的：由幻象产生的，以幻象为基础的，幻象性的；欺骗性的：
例句：
.Secret activities offer presidents the alluring but often illusory promise that they can achieve foreign policy goals without the bothersome debate and open decision that are staples of democracy.(Tom Wicker)
.总统私下采取行动，给人这样一个虽诱人但却是虚幻的承诺：似乎总统可以避开冗长的辩论和公开表决这些繁复的民主成果，来达到外交政策的目的。.(汤姆·威克)