All 34 Uses of

however
in
Killing Kennedy

For some on the White House staff, however, the scene is almost surreal.†
p. 36.5

however = a word used to connect contrasting ideas as when using though, in spite of that, in contrast, nevertheless, etc.

The Soviets, however, were unsure of the intelligence and didn't pass along the news to Castro.†
p. 50.5

The greatest insult, however, isn't that Johnson has lost his political pull in Washington, it's that he has lost almost all his clout in his home state of Texas.†
p. 55.8

For now, however, Johnson possesses that rare privilege of entering the Oval Office through the Rose Garden door.†
p. 56.1

Six months later, however, it is CIA director Allen Dulles who is fired.†
p. 59.8

Not when Jackie was there, however.†
p. 75.9

however = a word used to connect contrasting ideas as when using "though", "in spite of that", "in contrast", "nevertheless", etc.

Bobby's true surprise about Sinatra, however, is not that the singer is connected with the Mafia.†
p. 78.4

however = a word used to connect contrasting ideas as when using though, in spite of that, in contrast, nevertheless, etc.

A close look at his smooth face, however, reveals that he is still very much a child.†
p. 93.5

Hoover, however, does take an interest in Reverend King—but only because of the widespread belief within the FBI that the civil rights movement is part of a larger Communist plot against America.†
p. 99.4

There is no question, however, that Monroe's going public could have been enough to sink a presidential campaign.†
p. 148.2

Perhaps worst of all, however, Aristotle Onassis is a known philanderer.†
p. 218.5

Special Agent James Hosty Jr., however, does not provide that name, and it is not that of Lee Harvey Oswald.†
p. 234.4 *

He is, however, bitter that a man such as John Kennedy has so many advantages in life.†
p. 248.7

The museum's owners, however, balked at buying Oswald's original pine casket, which was replaced after his body was exhumed in 1981, saying it was too macabre.†
p. 298.1

The legendary actress, however, was fond of taking long walks through the streets of New York, most often wearing a pair of oversize sunglasses—a habit that her admirer, Jackie Kennedy, would also assume.†
p. 301.6

However, before you proceed further, please know that this is a fact-based book and some of what you will read has never before been publicly stated.†
p. 3.2

However, the U.S. Navy pilots are not to attack ground targets or actively seek out air-to-air combat—yet another sign that JFK has lost his nerve.†
p. 58.3

However, despite outward acceptance, deep inside Jackie takes it very personally.†
p. 67.5

Even that little bit of passion, however misguided, is better than the cold side of his character that she finds so frustrating.†
p. 103.9

However, now, as he begins his response to Kennedy's speech, the Soviet dictator turns crafty and chooses his words carefully.†
p. 120.9

However, their plans went awry when Bobby was tipped off by anonymous sources that Marilyn Monroe had unexpectedly died.†
p. 147.1

However, four of them—Addie Mae Collins, Cynthia Wesley, Carole Robertson, and Denise McNair—do not.†
p. 205.7

However, JFK does not like the agents to stand on the running boards because this blocks the crowd's view of him, so they often ride one car behind.†
p. 243.9

However, Curry has chosen not to position any men in the vicinity of Dealey Plaza, thinking that the main crowd-control issues will take place prior to that destination.†
p. 259.8

However, Vietnam was an inherited headache that proved to be his undoing.†
p. 296.9

However, like his brother, Bobby Kennedy was assassinated by a disturbed lone gunman, Sirhan Sirhan, who shot Bobby in a Los Angeles hotel just moments after he had claimed victory in the California primary.†
p. 297.5

However, his campaign floundered badly, and he was forced to drop out after securing just one delegate.†
p. 299.8

Definitions:

(1) (however as in: However, complications may...)
though (or another expression that connects contrasting ideas)

(Based on idea 1 we might not expect idea 2, but this is a way of saying that even though idea 1 exists, we still have idea 2. Synonyms include in spite of that, despite that, nevertheless, nonetheless, on the other hand, in contrastand but.)
(2) (however as in: However much she tried...)
to whatever degree (regardless of how much; or whatever unspecified amount)
(3) (however as in: However you do it, get it done!)
in whatever way
(4) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Much more rarely (and arguably incorrectly), however can be used to intensify the word how, as when one says "However did you find her?" Grammarians would suggest using two words for that usage: "How ever did you find her?"