と([思「おも」]う、[言「い」]う、[考「かんが」]える) => That A N4
Particles
と[思「おも」]いきや => Even though A (was thought/expected), different result B N1
Contrast/Surprise
ずじまい => Haven't done A N1
Will, Decision, Doing
だろうと[思「おも」]う => I think probably A N4
Sentence Endings
ようと[思「おも」]う => I think I will A N4
Causative, Passive, Volitional
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
[次第「じだい」]だ => It depends on A N2
Based, Focused, Depending on
かと[思「おも」]ったら/かと[思「おも」]うと => Athough A, B., As soon as I noticed A, B, almost immediately after A, B N2
Time, Situation
にひきかえ => In contrast to A N1
Comparison/ Exchange
ないものでもない/ないでもない => A is not completely impossible N1
Need/Requirements
[次第「じだい」]では => Depending on A, B may change N2
Based, Focused, Depending on
うではないか/うじゃないか => Let's go A; Why don't we A? N2
Miscellaneous