עִלִּיʻillîy

Pronunciation: il-lee' · Hebrew/Aramaic (Old Testament) · H5942

Same root

עָלָהʻâlâh · H5927to ascend, intransitively (be high) or actively (mount); used in a great variety of senses, primary and secondary, literal and figurative
עִלַּיʻillay · H5943supreme (i.e. God)

Where it appears

Appears 2 times in the Bible.

Joshua 15:19 She said, “Give me another gift. You have already given me land in the Negev; now please give me springs of water, too.” So Caleb gave her the upper and lower springs.
Judges 1:15 She said, “Let me have another gift. You have already given me land in the Negev; now please give me springs of water, too.” So Caleb gave her the upper and lower springs.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).