An adjective meaning restless or hurried—lacking calmness, moving busily or nervously; often used for busy, hectic times.
年末は街がせわしなくて落ち着かない。
The city is hectic at year-end and it doesn't feel calm.
彼はせわしない動きで部屋を歩き回っていた。
He paced around the room in a restless manner.
せわしない一日が終わり、やっと休めた。
A hectic day ended and I was finally able to rest.