uncertainty
UK: ʌnˈsɜː.tən.ti | US: ʌnˈsɜːr.tən.ti
n. the state of being unsure or not confident about something
n. something that is not known or definite
The word "uncertainty" combines the prefix "un-" (Old English "un-," meaning "not") with "certain" (from Latin "certus," meaning "fixed" or "resolved"), and the noun-forming suffix "-ty" (from Latin "-tas"). The root "certain" evolved through Old French "certein," retaining its core meaning of sureness. The addition of "un-" negates this, creating a term that describes doubt or lack of clarity. The suffix "-ty" solidifies it as an abstract noun, reflecting a state or condition.
The uncertainty of the weather made planning the picnic difficult.
Investors dislike market uncertainty because it increases risk.
Her voice trembled with uncertainty as she answered the question.
Scientific discoveries often reduce uncertainty about natural phenomena.
The political situation is filled with uncertainty about future policies.