If you know that the word laud has to do with praise what can infer laudible means?

If you know that "laud" means to praise, you can infer that "laudable" means worthy of praise.

Here's how:

* laud (verb): to praise highly

* laudable (adjective): deserving praise, commendable

The suffix "-able" often indicates the ability or quality of something. So, "laudable" signifies something that is capable of being lauded or deserving of praise.