"She advertised herself as a "Family Counselor", but never having been married, or had any children her credibility in that area was suspect."
One's credibility can be undermined if one is caught lying.
I have a lot of credibility because I use a reliable sourceHer credibility wasn't a factor in deciding where the money should go.
Nobody questioned her credibility until she went to jail on suspicion of assisting in the theft of several company records.
I am not writing a sentence using that word.
I can give you a sentence using the word galaxy.
This is a sentence using the word aviator.
a sentence using the word endotracheal
This is a sentence using the word monomer. :P
I am saying a sentence using the word collagen.
this is a sentence using the word armchair.
The lawyer's strategy was to attack the credibility of the witness.
Need a sentence using the word crater?