wonted comes from wont + -ed; wont is a contraction of woned, past participle of the verb wonen ('to dwell, be accustomed'), from Old English wunian. Morphologically, the word is transparent: -ed is attached to the older base named in the history, so the modern form packages an inherited or borrowed stem inside a later English derivative. In modern use, the adjective sense is "customary; usual or habitual", which keeps the etymology connected to the word's present dictionary value rather than treating it as a merely historical label. The wider word family includes related English forms such as wont, won, showing how the same base continues to support neighboring English vocabulary. The principal historical forms in the chain include Old English wunian, Proto-Germanic *wunāną, which anchor the explanation in named linguistic material.