Definition and Meaning for 虛 (phone based)

xu

需¯戌¯欻¯許ˇ旭ˋ酗ˋ序ˋ勖ˋ煦ˋ緒ˋ續ˋ絮ˋ恤ˋ

于:吁¯訏¯盱¯圩¯訏ˇ

羽:栩ˇ詡ˇ

胥:胥¯醑ˇ婿ˋ

須:須¯鬚¯

句:昫¯姁¯昫ˇ姁ˇ昫ˋ

畜:畜ˋ蓄ˋ

虚:虚¯虛¯噓¯墟¯

余:徐ˊ敘ˋ

Above chars grouped by common phonetic elements.