with good reason

with (good) reason

Having a sound, justifiable cause or purpose. Yes, it was I who denied the defendant's application, but with reason—none of his supporting documentation was from within the last six months, as stipulated on our department's website. Officers may only search a person's private belongings or possessions with good reason that can be proven to the courts.See also: reason

with good reason

Because something has already been proven to be true or justified. Yes, I'm suspicious, but with good reason—I've already caught her twice.See also: good, reason