Definition of Worthwhile

Babylon English Dictionary
rewarding, beneficial, profitable
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Worthwhile Definition from Arts & Humanities Dictionaries & Glossaries
English-Latin Online Dictionary
valens
Worthwhile Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(adj.)
Worth the time or effort spent.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

worthwhile
adj : sufficiently valuable to justify the investment of time or interest; "a worthwhile book"

GLOSSARY OF ESOTERIC WORDS
being worth the time or effort spent
EG:You are always a valuable, worthwhile human being -- not because anybody says so, not because you're successful, not because you make a lot of money -- but because you decide to believe it and for no other reason.(W.DYER)
WordNet 2.0

Adjective
1. sufficiently valuable to justify the investment of time or interest; "a worthwhile book"
(similar) worthy
Worthwhile Definition from Medicine Dictionaries & Glossaries
A Basic Guide to ASL
Both 'F' hands, palms facing each other, move apart, up, and together in a smooth elliptical fashion, coming together at the tips of the thumbs and index fingers of both hands.