Lexical Definition

‎אָדַר‎ ʼâdar (aw-dar') be glorious ^H:V
a primitive root

(become) glorious, honourable.

• to expand, i.e. be great or (figuratively) magnificent

1) to be great, be majestic, wide, noble (poetic)
1a) (Niphal) majestic, glorious (participle)
1b) (Hiphil) make glorious

Brown-Driver-Briggs

[‎אָדַר‎] verb (poetry) wide, great, (thence) high, noble (? Assyrian adâru Dl^W) —

Niph`al Participle majestic, glorious, of ‎׳‎‎י‎, ‎נֶאְדָּר‎ Exod 15:11 construct ‎נֶאְדָּרִי‎ vExod 15:6 (see Di); Hiph`il Imperfect ‎יַאְדִּיר‎ make glorious the teaching Isa 42:21 (‎׳‎‎י‎ subject)

Brown-Driver-Briggs References