Bundled up is a term used to describe the act of wrapping oneself in layers of clothing or blankets for warmth. The crossword solutions for this term are swathed (7 letters), trussed (7 letters), and WRAPPED (7 letters). Swathed means to wrap or cover something with loose folds of cloth, while trussed means to tie or secure something firmly. WRAPPED, on the other hand, means to enclose something in paper or cloth. All three terms can be used to describe the act of bundling up.