~きわまる/きわまりない(~極まる/極まりない)      => extremely; very ~ N1
[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount
[極「きわ」]まる => Extremely A, could not be more A N1
Adjectival, Descriptions
あまり => so much… N3
More or less in quantity
がわかります => Capacity N5
Ability
あまりに(も)~と / あんまりに(も)~と => too much; so much… that; excessively ~ N3
Extreme level
つまり => in other words; in summary N3
あまりに (も) => too much; so much… N3
Extreme level
あまり~ない => not very, not much ~ N5
あまり~ない => Not very ~ N5
Amount
に...がV-てあります => Object status N4
Description
じゃありません => not to be N5
Emphasize negative meaning