The term 'Lazy Sort' is a combination of four words: BUM (3 letters), IDLER (5 letters), LIEABED (7 letters), and SLUGGARD (8 letters). BUM is a slang term for a person who is lazy or does not work, while an IDLER is someone who is inactive or idle. A lieabed is someone who spends a lot of time in bed, and a SLUGGARD is someone who is habitually lazy and inactive. Together, these words describe someone who is very lazy and inactive, and who spends most of their time in bed.