through
/ˈthrü/
preposition
—used as a function word to indicate movement into at one side or point and out at another and especially the opposite side of
by way of
—used as a function word to indicate passage from one end or boundary to another
adverb
from one end or side to the other
from beginning to end
to completion, conclusion, or accomplishment
adjective
arrived at completion or accomplishment
washed-up, finished
admitting free or continuous passage : direct
is through with the job