Pronunciation: (un-sûr'tn-tē), [key]
—pl. -ties for 2.
1. the state of being uncertain; doubt; hesitancy: His uncertainty gave impetus to his inquiry.
2. an instance of uncertainty, doubt, etc.
3. unpredictability; indeterminacy; indefiniteness.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.