1. yap
2. varlet
3. ruffian
4. rascal
5. vagrant
6. blackguard
7. sinner
Relative explainations:
<scoundrel> <knavishness> <hoodlum> <mucker> <rotter> <ragtag> <skin> <skellum> <scampishness> <bummer> <outcast> <knave> <villain> <thug> <mugg> <roughneck>
Examples:
1. 每个无赖不一定是盗贼；每个盗贼必定是无赖。
Every rascal is not a thief, but a thief be a rascal.
2. 那个无赖被轰出大厅。
That rascal was hooted out of the hall.
3. 我不知道怎么能对付这个无赖。
I do not know how to deal with this rascal.