He alluded to major changes coming to the company in his speech, but didn't give any details.

alluded 是动词 allude 的过去式。allude 来自拉丁语词根 ad-（表示"朝向"）和 ludere（"玩耍"），原意是"间接提及、影射"。这个词通常用于正式场合，表示不直接说明而是委婉地暗示某事。