邃ㄙㄨㄟˋsuì密ㄇㄧˋmì

精深細密。《晉書·卷二九·五行志下》：「屋宇邃密，非龍所處。」宋·朱熹〈鵝湖寺和陸子壽〉詩：「舊學商量加邃密，新知培養轉深沉。」似精細、細密反粗疏

英deep, profound, abstruse and full (of thought)