Exactly; precisely — indicating an exact amount or measurement with no excess or deficit.
会費は1000円きっかりです。
The membership fee is exactly 1,000 yen.
彼は2時間きっかりで宿題を終わらせた。
He finished his homework in exactly two hours.
仕事はきっかり済ませてから出かけるつもりだ。
I plan to finish the work precisely before going out.
Punctually; exactly on time — occurring at the precise scheduled time without delay or early start.
電車は9時きっかりに出発した。
The train departed exactly at 9:00.
会議は12時きっかりに始めましょう。
Let's start the meeting promptly at 12:00.
彼は約束どおり、きっかり時間に現れた。
He showed up exactly on time as promised.