Pronunciation: (fôr'su-bul, fōr'-), [key]
1. done or effected by force: forcible entry into a house.
2. producing a powerful effect; having force; effective.
3. convincing, as reasoning: a forcible theory.
4. characterized by the use of force or violence.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.