決して~ない => never; by no means ~ N3
かりそめにも => Whatever it is..., do not.... N1
Position, perspective
[決「けっ」]して~ない => Won’t, isn’t N3
Will, Decision, Doing
~んがため(に)/~んがための      => in order to ~ N1
~づめだ      => full of N1
なりとも/せめて~だけでも => at least; even just a little (adverbial particle) N1
に決まっている => certainly; I’m sure/certain that; it must be the case that ~ N2
ため => In order to, for N4
Purpose, target
めったな => hardly; rarely; seldom N2
Ban
ずくめ => completely; entirely; nothing but ~ N1
せめて => at least; at most ~ N2
に[決「き」]まっている => A is a given, A must be the case N2
Information, Report