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1.
1. The battle cry for sea air land specwarriors, aka NAVY SEALS.
2. An affirmative acknowledgment as in: I understand, HELL YEAH, Yes Sir, No Problem.
Master Chief: You will complete the objective as ordered and failure is NOT an option. Is that understood?

Team: HOOYAH Master Chief!!
by devgru November 17, 2003
 
2.
Definition of “HooYah”

"HooYah" (or also "Hoo ah) adj., adv., n., v., conj., interj., excla. Orig. unknown Slang. 1. Referring to or meaning anything and everything except "no". 2. What to say when at a loss for words. 3. (a). Good copy. (b). Roger. ©. Solid copy. (d). Good. (e). Great. (f). Message received. (g). Understood. (h). Acknowledged. 4. (a). Glad to meet you. (b). Welcome. 5. "All right!" 6. (a). I don't know the answer, but I'll check on it. (b). I haven't the foggiest idea. 7. I am not listening. 8. "That is enough of your drivel; sit down!" 9. Yes. 10. "You've got to be kidding me!" 11. Thank you. 12. Go to the next slide. 13. You've taken the correct action. 14. I don't know what that means, but I'm too embarrassed to ask for clarification. 15. Squared away <He's pretty hooyah.>. 16. Amen!
He's pretty hooyah
by Paul D May 11, 2003