Where does “quietful” come from?
quietful (English) comes from English quiet, from Latin quiētus, from Latin quiēscō, from Latin quiēs, from Proto-Italic kʷiētis, from Proto-Indo-European kʷyéh₁tis, from Proto-Indo-European kʷyeh₁- — to rest; rest, peace.
quietful (English): Full of quiet
Ancestry of “quietful”, step by step