ないと/なくちゃ/なきゃ => must do; need to; gotta do ~ N3
んじゃなかったか => shouldn't have... N4
Regret
ちゃった => to do something by accident, to finish completely N3
きっと => surely; undoubtedly; almost certainly; most likely N4
いらっしゃる => to be; to come; to go (polite version) N4
んじゃ => If ... then... N4
Condition (hypothetical condition)
てっきり...と思う => surely; certainly; without a doubt N3
なけりゃ => If not ... N2
Condition (hypothetical condition)
さっき => some time ago; just now; a very short time ago N4
に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
ちゃんと => Clear, neat, dignified, complete N3
Result status
ちゃんとする => Serious, tidy, complete N3
Result status