ah, aha, ha

Concise Bible Dictionary:

The War-Horse answers the trumpet with Ha, Ha; he is ready (Job 39:25). the same Hebrew word is Translated AH, AHA.

Strong’s Dictionary of Hebrew Words:

Transliteration:
heach
Phonic:
heh-awkh’
Meaning:
from 1887 and 253; aha!
KJV Usage:
ah, aha, ha