词根词缀：ambul-, ambulat-, -ambulate, -ambulating, -ambulation -ambulator, -ambulatory, -ambulant, -ambulic, -ambulism, -ambulist

【来源及含义】Latin: to walk, take steps, move around; from "to wander, to go astray"

【同源单词】amble, amble, ambulacrum, ambulance, ambulant, ambulate

词根词缀：-ism, -ismus

【来源及含义】Greek, ismos; Latin, ismus: a suffix: belief in, practice of, condition of, process, characteristic behavior or manner, abnormal state, distinctive feature or trait

【同源单词】abaptism, abolitionism, abortionism, abrakophilism, absenteeism, absolutism

词根词缀：somni-, somno-, somn-, -somnia, -somniac

【来源及含义】Latin: sleep, sleeping; dreams, dreaming

【相关词根词缀】 Related "sleep" units: dorm-; hypno-; letho-; narco-; oneiro- (dream); sopor-.

【同源单词】cacosomnia, dyssomnia, dyssomniac, dyssomniac, hypersomnia, hypersomniac