Adverb (fukushi), Adverb taking the 'to' particle, Suru verb
busily; sedulously; laboriously; feverishly; fussily; worrying (about little things)
Usually written using kana alone
何でもかんでもむきになってあくせくするのをやめれば、きっと人々は今の２倍も長生きするだろう。I'm sure people would live twice as long if they stopped getting themselves worked up over everything.
Also written 偓促【あくせく】