give credence to something—
1. put trust in smth.; believe smth.:
- The jury gave credence to these claims and awarded Lawrence just compensation.
2. make smth. appear more convincing:
- This gave credence to the hypothesis that Israel had not shared with Washington all the information.
lend credibility to something— = give credence to something 2:
- By quoting other writers, you lend credibility and support to your own ideas.