登高一呼 dēnggāoyīhū to make a clarion call Origin Definitions Defs Strokes Stroke Words Sentences Sents 登高 dēnggāo to ascend heights to climb a mountain or other high place一 yī adverbnumeral [suddenness] Used before a verb to indicate that an action or situation occurs suddenly or unexpectedly.呼 hū verb to shout To cry out; to shout or yell loudly