お～
お～ · o～ · JLPT N5 · noun
honorable ~ (honorific)
🎁 O~ = an Oh! of respect: o-cha is honorable tea, o-kane honorable money
The prefix お comes from the kanji 御, meaning to honor or govern. Stick it on a noun to make it polite: 茶 (cha) becomes お茶 (ocha), 水 becomes お水. It sounds like the English Oh! you say when something impresses you.