Strong's #7689: saggiy' (pronounced sag-ghee')
from 7679; (superlatively) mighty:--excellent, great.
Brown-Driver-Briggs Hebrew Lexicon:
ּׂ
śaggı̂y'
1) great (of God)
Part of Speech: adjective
Relation: from H7679
Usage:
This word is used 2 times:
Job 36:26: "Behold, God is great, and we know him not neither can the number of his years"
Job 37:23: "Touching the Almighty, we cannot find him out: he is excellent in power, and in judgment, and in plenty of justice:"