←
Old English hū (inherited)
←
Middle English hou (alter)
←
Middle English howe (alter)
←
Middle English hu (alter)
←
Middle English hwu (alter)
←
Middle English wou (alter)
←
Proto-Germanic *hwō (inherited)
←
Proto-West Germanic *hwō (inherited)
→
English how (inherited)
→
Middle English hough (alter)