Probably back-formation from ጌሰም (gesäm, “tomorrow”), see it for a derivation. <span class="searchmatch">ጌሰ</span> • (gesä) (verbal noun ገይስ (gäys), prefix conjugation ይጊስ (yəgis)) to depart...
(gäys) departure, journey, leave particularly in the morning, verbal noun of <span class="searchmatch">ጌሰ</span> (gesä, “to go in the morning”) 1913, Enno Littmann, editor, Deutsche Aksum-Expedition...
dawn”), 𐩴𐩠𐩣 (ghm, “to go just before dawn”). Hans Bauer instead pairs <span class="searchmatch">ጌሰ</span> (gesä, “to go in the morning”) with Arabic جَاشَ (jāša), جَيْش (jayš), like...
rally, to incite a war or raise up arms, and can be further related to Ge'ez <span class="searchmatch">ጌሰ</span> (gesä, “to rise early”), ገይስ (gäys, “departure, journey particularly at the...