1. [n]  a writer whose handwriting is careless and hard to read
2. [n]  informal terms for journalists

SCRIBBLER is a 9 letter word that starts with S.

1. \Scrib"bler\, n.
   One who scribbles; a petty author; a writer of no reputation;
   a literary hack.
   
         The scribbler, pinched with hunger, writes to dine.
                                                  --Granville.
   
   

2. \Scrib"bler\, n.
   A scribbling machine.