まず...だろう/ ...まい => Surely... N2
Speculation
ずじまい => ended up not doing ~ N1
ずじまい => Haven't done A N1
Will, Decision, Doing
気味 => -like; -looking; -looked; tending to ~ N2
まずは => Temporary, first of all N5
Consider it
気にもならない => it's no use; can't do N1
Evaluate
~ないではすまない / ずにはすまない      => must; will definitely; can't help but to ~ N1
に気がつく => to notice; to realize N4
ずにはすまない/ないではすまない => A must be done N1
Potential, Possibility
も[構「かま」]わず => Without considering A N2
Considering, Concerning
…ず、…ず => No... but also no... N1
Explain
~にとどまらず => not limited to; not only… but also ~ N1
Simultaneously