Completely or decisively (e.g., quitting); to do something without hesitation — straightforward and final.
彼は嫌な仕事をすぱっと辞めた。
He quit that unpleasant job without hesitation.
やるべきことをリストにして、すぱっと片付けた。
I made a to-do list and took care of things decisively.
彼女は関係をすぱっと断ち切った。
She cut off the relationship completely.
Cleanly (cutting, snapping off); in a single, clean blow — describing something done sharply and neatly.
ナイフがすぱっと肉を切った。
The knife sliced through the meat cleanly.
話をすぱっと終わらせて、次の話題に移った。
He wrapped up the conversation neatly and moved on to the next topic.