adjective.
Having the characteristics of a wimp; feeble, indecisive, cowardly.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
weak and ineffectual
Word Usage
"Also, with such thin wimpy animals as pronghorns, sheep, and goats (mountain goats are actually pretty tough, but thin sided), you don't want a tough penetrating bullet like a TSX."