how to say "timing" in Hebrew...

תזמון

I did a stint on stage a couple of years ago acting in Sure Thing, where one of my key lines was "it's all in the timing."

If you know a bit of Hebrew (for instance, if you've taken Level 1 at Ulpan La-Inyan), you surely know the word for time - זְמָן (zmahn).

Here's the word for timing: תִּזְמוּן (teez-MOON). For example, הַכֹּל בַּתִּזְמוּן (hah-KOHL bah-teez-MOON) - it's all in the timing (literally, "everything is in the timing").