Bluff it out
Definition 1 of 1
Pro Tip 1/3Confidence Pretense
Bluffing implies acting more confident than you are to convince others. 
Despite not knowing the answer, she decided to bluff it out with a bold statement.
Pro Tip 2/3Risk Involved
Using 'bluff it out' can be risky; if exposed, it could damage credibility. 
He tried to bluff it out during negotiations, but they called his bluff.
Pro Tip 3/3Short-term Solution
'Bluff it out' is often a temporary fix, not a long-term strategy. 
She managed to bluff it out through the quiz, but knew she had to study harder for finals.