Dictionary Definition

twerp n : someone who is regarded as contemptible [syn: twirp, twit]

User Contributed Dictionary

Unknown, but may be a dialectal form of dwarf.

(British colloquial) A fool, a twit.

Now you've broken it, you twerp!
(American colloquial) A small or puny person; one regarded as insignificant, contemptible.

Get out of my way, you little twerp!
(American colloquial) A person who can be bullied playfully, or easily teased. Sometimes used as a pet-name (often for a younger sibling).