fathom(/arts Осознать, разобраться в чем то. Пример использования, что-то плохое случилось (кого-то убили) и близкие переживают. Причина и сами события непонятны людям. Охваченный своим эмоциями, близкий друг может сказать It was inconceivable to fathom this happening. mazurov)
wrap one's mind around something(an idea, notion or fact isidora77); come to grips with("Our Broncos family is in shock as we try to come to grips with our incredible loss," Kevin Garinger, the team's president, said in a statement. VLZ_58); come to realize(The 17-year-old soldier who was eager to join the trenches in France comes to realize the horrors of warfare.ART Vancouver)
wrap one's head around something(to understand something, especially something strange or out of the ordinary • to find a way to understand or accept (something)КГА)