*ˀr - light (Fronzaroli 1965a: 138, 144; Kogan 2011: 196)

Akkadian

urru - morning (CAD U–W 243, AHw. 1433)

Ebla

ù-ru₁₂ /ˀurru/ - light (VE 817, Kogan–Krebernik 2021b: 683)

in ù-ru₁₂ mu-si-im /ˀurru mūšim/ ‘light of the night’

Ugaritic

ˀur - warmth, heat (DUL 94–95)

Ugaritic

ˀar, ˀir - light (DUL 94–95)

Hebrew

ˀōr - light (HALOT 24)

Arabic

ˀirrat- - heat, flame (LA 4 18)

Arabic

ˀuwār- - heat, flame (LA 4 39)

Geez

ˀer - sun, light (CDG 36, EDG 118)

Tigre

ˀarwa - flame (WTS 359)

Tigre

ˀarwä - to flame, to blaze (WTS 359)

Soqotri

έrir - to light, kindle, illuminate (LS 75; Naumkin et al. 2019b:84)

éˀereʰ ‘moon’ is likely related.