A great way to remember a character is by searching for patterns across all the words that contain it. Can you find similarities?
|必须||3||bì xū||must, have to|
|胡说||5||hú shuō||talk nonsense|
|胡同||5||hú tòng||lane, alley|
|胡乱||6||hú luàn||carelessly, at random|
|须知||6||xū zhī||notice; one should know that|