a. [f. WARRANT sb.1 + -LESS.] Without justification, unwarrantable.
1834. Athenæum, 10 May, 353/2. His apparently strange and warrantless delineation of the diabolical judge.
1863. Mrs. Whitney, Faith Gartney’s Girlh., v. The stinging and warrantless accusation.
1882. Brooklyn Daily Times, 19 Jan., 2/2. The execution of Guiteau cannot relieve the Stalwart leaders of one iota of the responsibility that rests upon them for the warrantless and inexcusable crusade they made during last summer.
