adverb, adverb taking the 'to' particle
hurriedly; in a rush; scurrying away
Describes moving away quickly, often with a sense of fleeing or making a hasty exit. Commonly used with verbs like 逃げる or 去る.
彼はすたこらと逃げていった。
He scurried away in a hurry.
子供たちはすたこらと家に帰った。
The kids rushed home helter-skelter.
The origin is uncertain; it is a sound-symbolic word (onomatopoeia) mimicking the sound or impression of hurried footsteps or quick movement.