Putting a bluff is a phrase commonly used when someone is pretending to have something they don't or trying to deceive another person. Synonyms for this phrase include "bluffing," "feigning," "pretending," or "fabricating." Another alternative is to say someone is "making a false claim" or "exaggerating." Putting a bluff can also be described as "misleading" or "tricking" someone into believing something untrue. While it may be tempting to put a bluff in certain situations, it's important to remember the consequences of being caught in a lie. It's always better to be honest and truthful in all situations.