(pos:名詞)
<explanation>
yue:有機會發生嘅問題、潛在嘅風險
eng:contingency; eventuality; circumstance; literally: ten-thousand one
<eg>
yue:#以防萬一 (ji5 fong4 maan6 jat1)
eng:in preparation for the contingency
<eg>
yue:唔怕一萬，只怕萬一。 (m4 paa3 jat1 maan6, zi2 paa3 maan6 jat1.)
eng:Fear not the ten thousand (expected things), just fear the one (unforeseen accident).

(pos:連詞)
<explanation>
yue:假設一啲唔好嘅嘢會發生
eng:(for undesirable events) what if; in case; supposing; literally: ten-thousand one
<eg>
yue:萬一佢唔嚟，噉我哋點算啊？ (maan6 jat1 keoi5 m4 lai4, gam2 ngo5 dei6 dim2 syun3 aa3?)
eng:If by any chance he doesn't come, what can we do?
<eg>
yue:萬一佢間公司破產，佢爭你嗰筆數點追返？ (maan6 jat1 keoi5 gaan1 gung1 si1 po3 caan2, keoi5 zaang1 nei5 go2 bat1 sou3 dim2 zeoi1 faan1?)
eng:In the case that his company goes bankrupt, how would you recover your money from him?