어떻다
eotteota · TOPIK 1
to be how, to be like what
어떻다 = 어떠하다 squeezed: 어떠 (how) + 하다 (to be/do)
Etymology: 어떻다 is the contracted form of 어떠하다, where 어떠 carries the sense of how/what kind and 하다 means to be or do. The ㅎ left behind explains forms like 어때요 (how is it?) and 어떤 (what kind of).