Lathered (up) is a term used to describe the process of applying soap or shampoo to one's body. The crossword solutions for this term are SOAPED (6 letters), SUDSY (5 letters), SOAPY (5 letters), and INAPET (6 letters). SOAPED refers to the act of applying soap to one's body, while SUDSY and SOAPY refer to the foam created when soap is mixed with water. INAPET is an anagram of the word 'petain', which is an archaic term for lather.