JLPT-N1
at a stroke
一 いっ
一緒together一生懸命with utmost effort一家a house一種a species一瞬a moment一生whole life一層much more一体one object一致coincidence一般general一方on the other hand一昨日day before yesterday一昨年year before last一斉simultaneous一旦once一定fixed一括all together一気drink!(said repeatedly as a party cheer)一挙にat a stroke一切all一心one mind一帯a region一敗one defeat一変complete change