Middle English avalen

← Middle English a- (affix)

← Middle English vale (affix)

← Middle English -en (affix)

← Middle English valen (mention)

← Old French avaler (borrowed)

← Old French [[a]] [[val]] (mention)

→ English avale (inherited)

→ English vail (mention)

→ Middle English vale (link)

→ Middle English valen (clipping)