Some Comments on Words Deriving from "弟(di)"

The original meaning of the Chinese character 弟 is order,with extended meanings such as sequence and smoothness.Chinese characters such as 豑、 梯、娣、绨、悌、鬀、鮷,composed on the basis of 弟 and pronounced as its homophones,are molded on the character 弟 with an added part both to mark their respective categories and to give them a meaning differentiated from the original one.Meanwhile,弟 contains other meanings such as continual,progressive and gradual,thus differentiated words 涕、焍、睇、挮,etc.These Chinese characters are pronounced similarly and related semantically,with embryological relationship between them in regard to their written form.