soapen adjective 1verb 1forms 5 adjective1 •(rare) Made of, or carved out of soapFrom this ivory, or soapen, pinnacle we can see at once that there is no such thing as a population problem; there is only population. — 1958 verb1 •To make soapy; apply soap to; lather up formssoapened · soapening · soapens · more soapen · most soapen