The splendor of royal or divine appearance — the quality that commands respect, admiration, and awe. Hadar encompasses beauty, dignity, adornment, and glory. It is attributed to both God and to the ideal king/leader, describing a magnificence that naturally evokes reverence.
In the Psalms, hadar is frequently paired with hod (H1935, grandeur) to describe God's royal appearance. To 'worship in the beauty of holiness' draws on this cluster. Proverbs 31 uses hadar for the virtuous woman — 'strength and dignity are her clothing.' The word connects external majesty with inner excellence of character.