i-adjective
Describes light that is so strong it is hard to look at directly; also used figuratively for someone's beauty, talent, or success that is overwhelmingly impressive.
夏の太陽が眩しくて、目を開けていられない。
The summer sun is so dazzling I can't keep my eyes open.
彼女の笑顔は眩しいほど美しかった。
Her smile was so radiant it was almost blinding.