10 A. Slackers put on costumes last (9) L???B???S. Can only think of layabouts or lazybones , but can't parse either, or tie the letters in with 3D and 5D.
Thank you both. My "cold" brain isn't working today. Still struggling with 3D A man many like goes to Derby. C?y?e (5)... is it Clyde?
5D.Man lifting one last restriction (5) B?u?e.