Ha-Kaf-Kaf: To be suitable to the requirements of justice or wisdom or truth or right or reality or fact, to be just/proper/right/correct/true/fitting, to be authentic/genuine/sound/valid/substantial/real, also established/confirmed/binding/unavoidable/incumbent, to be manifest, without doubt or uncertainty, established as a fact, to be obligatory or due, have right or title or claim to a thing, deserve or merit a thing, most worthy, ascertain, to be sure or certain, to be true or verifiable or veritable, to be serious or earnest, dispute or litigate or contend with another, speak the truth, reveal/manifest/show a truth or right, to be proven true, pierce or penetrate.