from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Sufficiently valuable or important to be worth one's time, effort, or interest.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Good and important enough to spend time, effort, or money on.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. sufficiently valuable to justify the investment of time or interest
worth + while (Wiktionary)