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.

Noun

(en noun)

(rare) The physical act of seizing]] or [[take hold, taking hold of; seizure.

* 2006 , Phil Senter, "Comparison of Forelimb Function between Deinonychus'' and ''Babiraptor'' (Theropoda: Dromaeosauridea)", ''Journal of Vertebrate Paleontology, vol. 26, no. 4 (Dec.), p. 905:

The wing would have been a severe obstruction to apprehension of an object on the ground.

(legal) The act of seizing or taking by legal process; arrest.

* 1855 , , North and South , ch. 37:

The warrant had been issued for his apprehension on the charge of rioting.

The act of grasping with the intellect; the contemplation of things, without affirming, denying, or passing any judgment; intellection; perception.

* 1815 , , "On Life," in A Defence of Poetry and Other Essays (1840 edition):

We live on, and in living we lose the apprehension of life.

Opinion; conception; sentiment; idea.

* 1901 , , Penelope's English Experiences , ch. 8:

We think we get a kind of vague apprehension of what London means from the top of a 'bus better than anywhere else.

The faculty by which ideas are conceived or by which perceptions are grasped; understanding.

* 1854 , , Hard Times , ch. 7:

Strangers of limited information and dull apprehension were sometimes observed not to know what a Powler was.

Anticipation, mostly of things unfavorable; dread or fear at the prospect of some future ill.

* 1846 , , Typee: A Peep at Polynesian Life , ch. 32:

Every circumstance which evinced the savage nature of the beings at whose mercy I was, augmented the fearful apprehensions that consumed me.

(Webster 1913)