[決「けっ」]して~ない => Won’t, isn’t N3
Will, Decision, Doing
なくてはいけない => Must do A; have to A N4
Can, Should, Must
[全「まった」]く~ない => Not A (at all; even a little bit) N3
Not only, Not even
その[結果「けっか」] => Because of A (in the past), B N3
Reason, Result, Response
にいく => Go somewhere N4
Secondary Verb
[頂「いただ」]く => Received N4
Give and take advice
っぽい => Seems A; A-ish N3
Adjectival, Description
めったにない => Rarely N3
Degree. Level, Amount
がっている => Want, like N4
Secondary Verb
てはいけない => May not A, must not A N4
Can, Should, Must
~てください => Please do ~ N5
Asking and Telling
っけ => Marks a question (very informal), Used to trying to recall/confirm information A: 'What is it, again?' N3
Sentence Endings