Meaning of UNCERTAINTY in English

UNCERTAINTY

un ‧ cer ‧ tain ‧ ty /ʌnˈsɜːtnti $ -ˈsɜːr-/ BrE AmE noun ( plural uncertainties )

[ Word Family: noun : ↑ certainty ≠ ↑ uncertainty ; adverb : ↑ certainly ≠ ↑ uncertainly ; adjective : ↑ certain ≠ ↑ uncertain ]

1 . [uncountable] when you feel doubt about what will happen:

Times of great change are also times of uncertainty.

uncertainty about/as to

There is a great deal of uncertainty about the company’s future.

2 . [countable usually plural] a situation which you are not sure about because you do not know what will happen:

life’s uncertainties

uncertainty of

the uncertainties of old age

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.