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
切る => Give up, stop... N3
Happens next
[切「き」]れない => Can't finish/complete A N3
Potential, Possibility
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
さっぱり…ない => nothing/ absolutely not… N2
Position, perspective
あまり~ない => not very, not much ~ N5
よりない => to have no choice but ~ N3
Limit
..... ばかりもいられない => can't keep doing ~ N2
Speculation