trodden
Trodden is the past participle of the verb tread. It functions in English both as part of verb phrases in perfect tenses (has trodden, had trodden) and as an adjective describing a surface or concept that has been stepped on or repeatedly walked over. It can refer to literal wear on ground or to figurative ideas that are well established or commonly used.
Etymology and form: The form trodden derives from the Old English verb tredan, with the past tense
Usage and nuances: Trodden commonly appears in compounds and expressions such as well-trodden path, well-trodden ground,
See also: tread, treading, trod, well-trodden path, untrodden.