[合「あ」]う => To do A together/mutually N4
Secondary Verb
[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount
てかなわない => A is a problem N2
Adjectival, Descriptions
てもかまわない => No problem N4
Can, Should, Must
わけにはいかない => Must not A, Must A N3
Needs, Requirement
ないものでもない/ないでもない => A is not completely impossible N1
Need/Requirements
というものではない => Not sure, not means N2
Information, Report
わけがない => There's no reason for A (A should not be possible) N3
Potential, Possibility
わけではない => Although you may think A, that is not the case. N3
Contrast
か~ないかのうちに => Right after A, C N2
Time, Situation
ぐらいのものだ => Only A N1
(Not)only , (Not) even
ことのないように => So as not to A N1
Will, Decision, Doing