Noun

(en noun)

Mortality; plague; pestilence.

A calamity or disaster.

A feeling of apprehension, doubt, fear etc.

:* {{quote-web

, date=2012-08-25 , year= , first= , last= , author=Andy Pasztor , authorlink= , title=Armstrong, First Man on Moon, Dies , site=Wall Street Journal citation , archiveorg= , accessdate=2012-08-26 , passage=Opponents of those privatization plans hoped to use Mr. Armstrong's qualms as ammunition to block the White House initiatives, and they asked for more public statements. }}

A sudden sickly feeling; queasiness.

A prick of the conscience; a moral scruple, a pang of guilt. (Now chiefly in negative constructions.)

Noun

(uncountable) Doubt; the condition of being uncertain or without conviction.

*

, title=(The Celebrity), chapter=4 , passage=“Well,” I answered, at first with uncertainty , then with inspiration, “he would do splendidly to lead your cotillon, if you think of having one.” ¶ “So you do not dance, Mr. Crocker?” ¶ I was somewhat set back by her perspicuity.}}

* {{quote-news, year=2012, date=April 9, author=Mandeep Sanghera, work=BBC Sport

, title= Tottenham 1-2 Norwich , passage=After spending so much of the season looking upwards, the swashbuckling style and swagger of early season Spurs was replaced by uncertainty and frustration against a Norwich side who had the quality and verve to take advantage}}

(countable) Something uncertain or ambiguous.

(uncountable, mathematics) A parameter that measures the dispersion of a range of measured values.