All 11 Uses of

positive
in
Great Expectations

...as Mr. Pumblechook was very positive and drove his own chaise-cart—over Everybody—it was agreed that it must be so.
p. 42.7

positive = certain

When Barnwell began to go wrong, I declare that I felt positively apologetic, Pumblechook's indignant stare so taxed me with it.
p. 124.3

In my heart I believed her to be right; and yet I took it rather ill, too, that she should be so positive on the point.
p. 139.1 *

positive = certain

Now, you are distinctly to understand that you are most positively prohibited from making any inquiry on this head, or any allusion or reference, however distant, to any individual whomsoever as the individual, in all the communications you may have with me.
p. 146.9

positively = certainly (used for emphasis)

Sarah Pocket came to the gate, and positively reeled back when she saw me so changed; her walnut-shell countenance likewise turned from brown to green and yellow.
p. 165.9

positively = absolutely (used for emphasis)

And now before I say anything more about my father, or my father's son, and repay confidence with confidence, I want to make myself seriously disagreeable to you for a moment,—positively repulsive.
p. 263.9

When he felt his case unusually serious, and that he positively must find an opening, he would go on 'Change at a busy time, and walk in and out, in a kind of gloomy country dance figure, among the assembled magnates.
p. 292.2

She was even more dreadfully fond of Estella than she had been when I last saw them together; I repeat the word advisedly, for there was something positively dreadful in the energy of her looks and embraces.
p. 322.6

"Whether I should have noticed him at first but for your being there," said Mr. Wopsle, going on in the same lost way, "I can't be positive; yet I think I should."
p. 408.2

positive = certain

Finding that the afternoon coach was gone, and finding that his uneasiness grew into positive alarm, as obstacles came in his way, he resolved to follow in a post-chaise.
p. 459.3

positive = absolute (used for emphasis)

Definitions:

(1) (positive as in: I'm absolutely positive!)
certain (having no doubt; or used for emphasis)
(2) (positive as in: had a positive effect)
good or beneficial
(3) (positive as in: positive feedback from my boss)
approval or agreement
(4) (positive as in: a positive attitude)
optimistic (expecting or focusing on good things); or agreeable
(5) (positive as in: The test came back positive.)
found a condition or substance to be present
indicating the presence of something being tested for -- especially a disease, condition, or substance
(6) (positive as in: a positive number)
greater than zero (of a number)
(7) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

See a comprehensive dictionary for less common meanings of positive including some in the fields of electricity, physics, chemistry, medicine, philosophy, and grammar. Note that most all senses of positive indicate that something is good or present.