ないと,なくちゃ => Must do A N3
Needs, Requirement
ゃしない => Don't/Doesn't A (at all) N1
Will, Decision, Doing
がちです/がちになる => A tends to become/happen/occur N2
Potential, Possibility
うではないか/うじゃないか => Let's go A; Why don't we A? N2
Miscellaneous
に[違「ちが」]いない => Without a doubt, A N2
Information, Report
たち => Plural form N5
Amount
か~ないかのうちに => Right after A, C N2
Time, Situation
うち/ないうち => While A is the case, B; While A is occuring, B, While A is not occuring, B N3
Conditional, While
めったにない => Rarely N3
Degree. Level, Amount
ちなみに => A. and/in addition/by the way, B (a little more information) N2
Information, Report
[決「けっ」]して~ない => Won’t, isn’t N3
Will, Decision, Doing
っこない => A is definitely not possible N2
Potential, Possibility