←
Old English tredan (inherited)
←
Middle English trede (alter)
←
Middle English treede (alter)
←
Middle English tred (link)
←
Middle English tredel (link)
←
Middle English tred (affix)
←
Middle English -en (affix)
←
Proto-West Germanic *tredan (inherited)
→
English tread (inherited)
→
English tread (mention)
→
Middle English tred (back-formation)