autography：亲笔，亲笔签名 

词根词缀：auto-自己 + -graph-写 + -y名词词尾

• dirk
• dirndl
• dirt
• dis
• dis-
• disable
• disabled
• disabuse
• disadvantage
• setter
• setting
• settle
• settlement
• seven
• sever
• several
• severance
• severe
• sew
• sewage
• sewer
• sewerage
• sex
• sexagenarian
• sexism