1. unwarrantable - Adjective
2. unwarrantable - Adjective Satellite
Not warrantable; indefensible; not vindicable; not justifiable; illegal; unjust; improper.
Source: Webster's dictionaryAn observer named Andrew Crombie Ramsay at the meeting reported that Chambers "pushed his conclusions to a most unwarrantable length and got roughly handled on account of it by Buckland, De la Beche, Sedgwick, Murchison, and Lyell. Source: Internet
That same year, the strong and unwarrantable measures he adopted to subject the grand republic of San Marino to the papal states incurred the pope's displeasure, and left a historical scar in that place's memory. Source: Internet