にひきかえ => In contrast to A N1
Comparison/ Exchange
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
すら,ですら => Even A N1
(Not)only , (Not) even
なら => If N4
Conditional
やら~やら => A, B, ... (examples from a list) N2
Lists, Examples
くらいだ/ぐらいだ => Around/about N5
Amount
~から => Because, since… N5
Change, cause and effect
もらう => Received N4
Give and take advice
からある,からの => Over A (stresses large amounts) N1
Degree/ Level/Amount
くらいなら => I would prefer (doing) B over A N1
Contrast/Surprise
らしい => Seem to~ N4
Sentence Endings
とは[裏腹「うらはら」] => Contrary to A, opposite of A, ... N1
Contrast/Surprise