Exchange rate of the US greenback vis-a-vis the Kuwaiti dinar stood at KD 0.283 per dollar, while the euro dropped to KD 0. 386, said the daily exchange rate bulletin of the Central Bank of Kuwait on Thursday. The bulletin said the pound sterling stood at KD 0.462, the Swiss franc went down to KD 0.315 as well as the Japanese yen to KD 0.002.