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An Army term used to convey any one of a number of feelings or statements. It is used most vigorously by pogues. A good rule of thumb is the weaker a soldier's MOS is, the louder and more pronounced he will sound off with HOOAH.

Pogue: "I am an American soldier! HOOAH!!!!!"

Green beret: "That shit is gay"
by #1 Shitbag February 28, 2009
Phonetic spelling of the military acronym HUA, which stands for "Heard Understood Acknowledged." Originally used by the British in the late 1800's in Afghanistan. More reciently adopted by the United States Army to indicate an affirmative or a pleased response.
1: Sgt: "Y'all got the game plan?"
PFC(s): "Hooah sargeant!"

2: Sgt: "Y'all ready for chow?"
PFC(s): "Hooah sergeant!"
by MaddogS September 30, 2003
U.S. Military Slang.

Referring to, or meaning anything and everything except "no." Generally used when at a loss for words. Also:

Good copy, solid copy, roger, good or great; message received, understood.
Glad to meet you, welcome.
I do not know, but will check on it, I haven't the vaguest idea.
I am not listening.
That is enough of your drivel--sit down.
Stop sniveling.
You've got to be kidding.
Thank you.
Go to the next slide.
You have taken the correct action.
I don't know what that means, but am too embarrassed to ask for clarification.
That is really neat, I want one too.
by Anonymous August 12, 2003
Derogatory term for Army Soldiers, because of the fact they respond with hooah for any question given to them.
Sailor 1: Why do we have to wear these stupid reflective belts?
Sailor 2: I's because the Hooahs are fucking retarded and can't look both ways before crossing the street.

Marine: Oh man whats that smell? It smells like fucking Hooah!
by Chilito January 28, 2011
1: heard understood acknowledged 2:i don't know what you said but i want you to think i was paying attention. 3:yes. 4: i disagree but i'll do it anyway. 5: i want you to think i care. 6: i want to show you i can act motivated. 7: hardcore, tough.

of military origin
that ranger is hooah
by big johnny July 09, 2002
Army term for agreement or acknowledgement
"Private, go get me a cup of coffee"
"Hooah Sergeant"
by RyanSm April 22, 2008
1. Acknowledgment, although sometimes not agreement.
2. Excessively rigid or displays unnecessary military bearing.

Believed to have originated with Army Engineers in World War II, who when forced to "Hurry Up And Wait" chanted acronymn - H.U.A.W. - which became today's Hoo-ah. See also hooah
1. "We're supposed to dig a new latrine this morning, then get ready to move out tonight. Hoo-ah."

2. "That new lieutennant is way too hoo-ah."
by 12B December 12, 2002
Army slang used as a generic response to any question that would otherwise require a yes or no, or used in place of profanity when being given bullshit orders or receiving an ass chewing.
Dumbass NCO: Did you PMCS your Humvee?
Lazy Private: Hooah...

Worthless 1SG or Company Commander at COB formation at 2330 hrs: Formation tomorrow will be at 0315, bring in all of your issued gear and be prepared to take the APFT. Afterwards we will march to the motor pool for safety day activities which will last until 1730. Nobody will be released until POV inspections are done and all counseling statements are finished. After formation all barracks personell will stand at by their rooms for inspection, post housing personell will police call the parking lot, and off post personell will sweep the line at the motor pool.

Soldiers in Ate up Company: Hooah....(grunts and moans heard in the background)
by tripod October 02, 2004