2 Verbs to Use for the Word practiser

IV. Let us consider, that rash and vain swearing is very apt often to bring the practiser of it into that most horrible sin of perjury.

But such pleas do no more than suggest other faults of swearing, and good arguments against it; its impertinence, its abuse of speech, its disgracing the practiser of it in point of judgment and capacity.

2 Verbs to Use for the Word  practiser