ダル

na-adjective

dull; lifeless; boring

Casual slang describing something or someone as uninteresting, flat, or lacking energy. Often used in youth speech.

• この映えい画が、マジでダルい。

  This movie is seriously boring.

• 今日きょうはなんかダルい気き分ぶんだ。

  I feel kind of lifeless today.