白(しら)けるto be dampened (of the mood, interest, etc.), to be spoiled (e.g. of the atmosphere), to become subdued, to turn sour, to become unamused, to become bored, to become apathetic, to turn white, to fade (to white), to grow light (at dawn)

る-verb, Intransitive verb

1. 1.

   to be dampened (of the mood, interest, etc.), to be spoiled (e.g. of the atmosphere), to become subdued, to turn sour, to become unamused, to become bored, to become apathetic

2. 2.

   to turn white, to fade (to white), to grow light (at dawn)