←
Old English duce (inherited)
←
Old English dūce (mention)
←
Middle English ducke (alter)
←
Middle English dukke (alter)
←
Middle English dokke (alter)
←
Middle English douke (alter)
←
Middle English duke (alter)
→
English duck (inherited)
→
Middle English dokke (alter)
→
Marshallese dak (derived)