Synonyms for through

Finished

completed, over, ended; see done 1, finished 1.

From one side to the other

straight through, through and through, clear through*; see in 2, into, within.

During

throughout, for the period of, from beginning to end; see during.

By means of

by, by way of, by reason of, in virtue of, in consequence of, for, by the agency of, at the hand of, through the medium of, by dint of.

Referring to continuous passage

nonstop, free, unhindered, unbroken, opened, rapid, one-way; see also consecutive 1, constant 1, regular 3.

Antonyms broken*, interrupted*, intermittent.