uchiki~

shy

ude~

arm

umi~

sea [Heh, heh. It's also the word for pus… ^_^;;]

umibe~

seaside, seashore

ummei~

luck, destiny

ura~

reverse

urusai/urusee~

annoying (literally, but is used as "Shut up!")

uso~

lie (Miaka says this a lot - "uso! uso yo!" and it translates to "it's a lie! it's a lie!)

uta~

song, poem

uzu~

whirlpool

wakarimashita~

Yes, I see/Yes, I will (comply)

wakarimasen/wakarinai~

I don't get it/I don't understand

warui~

terrible/bad/evil

watashi~

I, me (a formal way for both genders)

watakushi~

I, me (Another formal way of saying those words; may be only for women, as I've only heard girls use it, but it could possibly be used by men, as well.)

wo ai ni

I love you (actually it's more of a Chinese translation from Fushigi Yuugi)