אי־ודאות

Etymology
From.

Noun

 * 1) Uncertainty: a lack of certainty.
 * עקרון אי־הוודאות של הייזנברג — ikarón í-havada'út shél háizenberg — the Heisenberg uncertainty principle
 * פחד, אי ודאות וספק — pákhad, í vada'út v'safék — fear, uncertainty and doubt

Usage notes

 * The most common singular definite form, especially in formal contexts, is, with the definite article attaching to the second word. Another common form is , with the definite article attaching to the term as a whole. The form , however, with two definite articles, is rare, and should probably be considered an error.