(n.) a day or one day; (slang) used as part of a prepositional phrase (一日都係) to blame someone (or something or 'a reason') for some negative things that have happened, all because of; owing to; thanks to (e.g. 一日都係你 means "It's all because of you" or "Thanks to you".)
先
sin3
early
prior
former
in advance
first
for now
ancestor
pioneering
only then
Learn Stroke Order
See how to write "講返" with stroke-by-stroke animation