un·cer·tain 
/ˌʌnˈsɚtn̩/ adjective
/ˌʌnˈsɚtn̩/ adjective [more uncertain; most uncertain] : not certain: such as a : not exactly known or decided : not definite or fixed
▪ an uncertain quantity ▪ The time of departure is still uncertain.
b : not sure : having some doubt about something
▪ We are still uncertain of the truth. ▪ She remains uncertain about her plans. ▪ I'm uncertain about how to respond.
c : not definitely known
▪ an uncertain claim ▪ The cause of the fire is uncertain.
d : likely to change : not constant or dependable
▪ uncertain weather ▪ He has an uncertain temper. ▪ They face a financially uncertain future.
▪ an uncertain quantity ▪ The time of departure is still uncertain.
b : not sure : having some doubt about something
▪ We are still uncertain of the truth. ▪ She remains uncertain about her plans. ▪ I'm uncertain about how to respond.
c : not definitely known
▪ an uncertain claim ▪ The cause of the fire is uncertain.
d : likely to change : not constant or dependable
▪ uncertain weather ▪ He has an uncertain temper. ▪ They face a financially uncertain future.
in no uncertain terms
: in a very clear and direct way
▪ My mother told me in no uncertain terms to never say that word again!
▪ My mother told me in no uncertain terms to never say that word again!
— un·cer·tain·ly adverb
▪ “Should I leave?” I asked uncertainly. ▪ A drunk guy staggered uncertainly along the street.
▪ “Should I leave?” I asked uncertainly. ▪ A drunk guy staggered uncertainly along the street.
