radiantly, radially, ray-like, in the form of a ray
radiantly
Она лучезарно улыбнулась гостям у порога.
She smiled radiantly at the guests on the doorstep.
Солнце лучезарно светило над утренним полем.
The sun shone radiantly over the morning field.
Девушка лучезарно посмотрела на своего жениха.
The girl looked radiantly at her fiancé.