- filth
![youdao](/etym/ico/youdao.ico)
![iciba](/etym/ico/iciba.ico)
![Dict](/etym/ico/haici.ico)
[filth 词源字典] - filth: see foul
[filth etymology, filth origin, 英语词源] - filth (n.)
![youdao](/etym/ico/youdao.ico)
![iciba](/etym/ico/iciba.ico)
![Dict](/etym/ico/haici.ico)
![YouDict](/etym/ico/youdict.ico)
- Old English fylð "uncleanness, impurity, foulness," from Proto-Germanic *fulitho (cognates: Old Saxon fulitha "foulness, filth," Dutch vuilte, Old High German fulida), noun derivative of *fulo- "foul" (see foul (adj.)). A classic case of i-mutation.