lie low

[lie low] or {nonstandard} [lay low] {v.}, {informal} 1. To stayquietly out of sight; try not to attract attention; hide.

Afterholding up the bank, the robbers lay low for a while.

2. To keepsecret one's thoughts or plans.

I think he wants to be electedpresident, but he is lying low and not saying anything.