big moment
An occasion that has been eagerly awaited. It's the big moment—they're finally picking the raffle winner! I'm sorry I spoiled your big moment—I had no idea Brad was going to propose.
big moment
and moment everyone has been waiting forthe special time that everyone has been waiting for. The big moment has come. I will now announce the winner. This is the moment everyone has been waiting for. Now we will learn the name of the big winner.