IPA: /ʌnˈsɜːr.tən.ti/
KK: /ʌnˈsɜrˌtɛnti/
The state of being unsure or having doubts about something.
There is a lot of uncertainty about the weather this weekend.
Uncertainty → It is formed from "un-" (meaning not) and "certus" (from Latin, meaning sure or certain) and the suffix "-ainty" (derived from the Latin suffix "-antia", indicating a state or quality). The word "uncertainty" means the state of being not sure or lacking certainty.
Think of 'not' ('un-') being combined with 'sure' ('certus') to remember that uncertainty means the state of not being sure.