Icelandic Verb sigli first-person singular present indicative/conjunctive active of sigla third-person singular/plural present conjunctive active of sigla Italian Verb sigli inflection of siglare: second-person singular present indicative first/second/third-person singular present subjunctive third-person singular imperative Latin Noun siglī genitive singular of siglumWikiwand - on Seamless Wikipedia browsing. On steroids.