They had to keep their discovery a secret until they had a legal claim to the land where they had found the gold.

VOA: special.2009.02.04

There is no need to keep it a secret, or keep it under your hat.

VOA: special.2010.05.09

How long can she keep it a secret,anyway? Jennifer Lopez gave birth to twins a couple of years ago and drew on her own experiences to play Zoe.

VOA: standard.2010.04.30