切る/切れる/切れない => to do something completely to the end/unable to do; too much to finish/complete N3
~をかわきりに(~を皮切りに)      => One after another; starting with ~ N1
使役形 => Causative form N4
切る => Give up, stop... N3
Happens next
[切「き」]れない => Can't finish/complete A N3
Potential, Possibility
~V使役受身      => causative-passive form N4
Conjugate verbs
[使「し」][役「えき」] => Coercive, permission, allow, make N4
Causative, Passive, Volitional
[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
よりいっそ => I'd rather... than... N2
Description
…どうりがない => No reason... N2
Emphasize negative meaning
~きわまる/きわまりない(~極まる/極まりない)      => extremely; very ~ N1
というより/というか => rather than ~ N3