A primitive root; to expand, i.e. Be great or (figuratively) magnificent -- (become) glorious, honourable.
H142. adar
[אָדַר] verb (poetry)
wide, great, (thence) high, noble (? Assyrian adâru DlW) —
Niph`al Participle majestic, glorious, of נֶאְדָּר ׳י, Exodus 15:11; construct נֶאְדָּרִי 15:6 (see Di);
Hiph`il Imperfect יַאְדִּיר make glorious the teaching Isaiah 42:21 (׳י subject)