1. not having or joined by a seam or seams - seamless stockings • Ant: seamed • Similar to: broadloom, circular-knit, unseamed 2. smooth, especially of skin - his cheeks were unlined - his unseamed face • Syn: unlined, unseamed • Similar to: smooth 3. perfectly consistent and coherent - the novel's seamless plot • Similar to: coherent, consistent, logical, ordered