All 5 Uses of

uniform

in

Pride and Prejudice

On that head, therefore, I shall be uniformly silent; and you may assure yourself that no ungenerous reproach shall ever pass my lips when we are married.†
p. 104.7 *

uniformly = in a manner that is consistent (the same in some way)

"You are uniformly charming!" cried he, with an air of awkward gallantry; "and I am persuaded that when sanctioned by the express authority of both your excellent parents, my proposals will not fail of being acceptable."†
p. 106.8

The situation of your mother's family, though objectionable, was nothing in comparison to that total want of propriety so frequently, so almost uniformly betrayed by herself, by your three younger sisters, and occasionally even by your father.†
p. 193.1

She saw all the glories of the camp—its tents stretched forth in beauteous uniformity of lines, crowded with the young and the gay, and dazzling with scarlet; and, to complete the view, she saw herself seated beneath a tent, tenderly flirting with at least six officers at once.†
p. 224.6

uniformity = consistency (being the same in some way)

Uses with a meaning too common or too rare to warrant foucs:

It was generally evident whenever they met, that he did admire her and to her it was equally evident that Jane was yielding to the preference which she had begun to entertain for him from the first, and was in a way to be very much in love; but she considered with pleasure that it was not likely to be discovered by the world in general, since Jane united, with great strength of feeling, a composure of temper and a uniform cheerfulness of manner which would guard her from the suspicions of the impertinent.†
p. 22.6 *

uniform = clothing of distinctive design worn by members of a particular group as a means of identification

Definitions:

(1) (uniform as in: uniform consistency)
consistent (the same in some way)
(2) (meaning too common or rare to warrant focus)
more commonly, uniform refers to clothing of distinctive design worn by members of a particular group as a means of identification. For example, an army uniform.