燦々 さんさん
sansan

Taru Adjective
To-Adverb

1. brilliant; bright

Usually Written in Kana
その部屋 へやには日光 にっこうがさんさんと そそいでいた。
sono heyaniwa nikkōga sansanto sosoide ita.
The room was bathed in sunshine.
Other forms: