The expression "lends credence to the conjecture" is standard. I was wondering if it sounds hyperformal or affected and can be replaced by "provides evidence as to the validity of the conjecture", "provides evidence for the validity of the conjecture", or "improves the confidence in the conjecture".
closed as primarily opinion-based by FumbleFingers, tchrist♦ Mar 24 at 16:17
Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.
Hyper formal or affected language is determined by your audience. Some groups won't mind "lends credence to the conjecture" others will be repelled by it.
Here's one persons thoughts on how to Tailor Your Writing to Your Audience https://www.writeraccess.com/blog/tailoring-your-writing-to-your-audience/
FumbleFingers has suggested some alternatives - supports, validates, proves