Well, a plausible lie would no doubt come easier when he wasn't preoccupied with keeping them both alive.

And it is not even a subtle or plausible lie.

I had no plausible lie, and the truth would not serve.

Yet he was too tired even to phrase a plausible lie.

She had not got the ingenuity right now to think up a plausible lie.

A plausible lie, and perhaps one she almost wanted to believe was true, but a lie nonetheless.

His mind raced as he tried to come up with a plausible lie.

"But if you won't believe the truth, someone has to help you come up with plausible lies, don't they?"

A number of plausible lies must be placed in a variety of ears.

She demands that we have dinner tonight, and then says, before I can make up a plausible lie, an acceptable.