All 14 Uses of

avenge
in
Atlas Shrugged

But when a society establishes criminals-by-right and looters-by-law-men who use force to seize the wealth of disarmed victims-then money becomes its creators' avenger.†
Chpt 2.2

avenger = someone who takes revenge

With a shudder of astonishment, Rearden found himself thinking that it was not the face of a man, but of an avenging angel.†
Chpt 2.7 *

avenging = taking revenge

We began to think that he had kept his word, that he, who had seen and known the truth we refused to know, was the retribution we had called upon our heads, the avenger, the man of that justice which we had defied.†
Chpt 2.10

avenger = someone who takes revenge

I'd like to think that I am wrong, that those words mean nothing, that there's no conscious intention and no avenger behind the ending of the human race.†
Chpt 2.10

I don't know ....I had dinner on the train, with—" She shook her head in helplessly bitter amusement: with the tramp, she thought, with a desperate voice pleading for escape from an avenger who would not pursue or be found-the avenger who sat facing her across the table, drinking a glass of orange juice.†
Chpt 3.1

I don't know ....I had dinner on the train, with—" She shook her head in helplessly bitter amusement: with the tramp, she thought, with a desperate voice pleading for escape from an avenger who would not pursue or be found-the avenger who sat facing her across the table, drinking a glass of orange juice.†
Chpt 3.1

streets of New York City, the only city on earth still able to understand it-in the faces of people, in their whispers, the whispers crackling tensely like small tongues of fire, the faces lighted by a look that was both solemn and frantic, the shadings of expressions appearing to sway and weave, as if cast by a distant flame, some frightened, some angry, most of them uneasy, uncertain, expectant, but all of them acknowledging a fact much beyond an industrial catastrophe, all of them knowing what it meant, though none would name Us meaning, all of them carrying a touch of laughter, a laughter of amusement and defiance, the bitter laughter of perishing victims who feel that they are avenged.†
Chpt 3.5

avenged = took revenge

If it's true, he thought, that there are avengers who are working for the deliverance of men like me, let them see me now, let them tell me their secret, let them claim me, let them—"Come in!" he said aloud, in answer to the knock on his door.†
Chpt 3.6

Do you hear me now, Hank Rearden, the greatest of the victims I have avenged?†
Chpt 3.7

avenged = took revenge

She could not stop herself, she could not resist it, she could not reject a moment's chance to avenge Ellis Wyatt, Andrew Stockton, Lawrence Hammond, all the others.†
Chpt 2.5

And that the looters forced you to speak, that you spoke to avenge me and set me freedoes not redeem the fact that it was I who made their tactics possible.†
Chpt 3.3

Then I saw the scene in full context again and in all of its actual meaning-I saw what price he was paying for his brilliant ability, what torture he was enduring in silent bewilderment, struggling to understand what I had understood-I saw that the world he suggested, did not exist and was yet to be made, I saw him again for what he was, the symbol of my battle, the unrewarded hero whom I was to avenge and to release-and then ....then I accepted what I had learned about you and him.†
Chpt 3.5

It was the three of us who resolved to avenge this country and to release its imprisoned soul.†
Chpt 3.7

"To avenge Hank Rearden!" he had cried defiantly, tears running down his furnace-tanned face.†
Chpt 3.8

Definitions:

(1) (avenge)
take revenge for a perceived wrong
(2) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Avengers is also used as a proper noun to refer to fictious superheroes or naval ship names. Avenger has also been used to describe classes of weaponry.