As adjectives the difference between raggier and saggier
is that raggier is (raggy) while saggier is (saggy).
raggier
English
Adjective
(head)
(raggy) raggy
English
Adjective
(er)
raglike; like a rag.
scruffy; tending to dress in rags.
Similar in style to ragtime music.
saggier
English
Adjective
(head)
(saggy)
saggy
English
Adjective
(er)
Baggy or loose-fitting.
That sinks or droops from wear or its own weight.