How to say now that you are grown-up, you ought to know better. in Japanese
1)
君君(kun) (pn) you/buddy/pal/monarch/ruler/sovereign/masterはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sighもうもう(mou) (adv,int) already/anymore/soon/shortly/more/further/other/again/interjection used to strengthen expression of an emotion大人大人(otona) (n) adultなな(na) (prt) connects adj to noun/indicates emotion or emphasis/command/prohibitionんだからno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb、、(、) Japanese commaもっともっと(motto) (adv) more/even more/longer/further分別分別(funbetsu) (n,vs) discernment/discretion/judgement/judgment/discriminationがなくてno dictionary result, likely a conjigated verbは(int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sighいけないいけない(ikenai) (exp) wrong/not good/of no use/hopeless/past hope/must not do。。(。) Japanese period "."
