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：-ance, -ancy

【来源及含义】Latin: often through French, quality or state of; being; condition; act or fact of _______ ing; a suffix that forms nouns

【同源单词】aberrance, absorbance, absorptance, abundance, acceptance, accordance

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