How to say this custom has become firmly established among the japanese. in Japanese
1)
このこの(kono) (n) this習慣習慣(shuukan) (n,adj-no) custom/habit/mannersはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh日本人日本人(nihonjin) (n) japanese person/japanese peopleのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question間に間に(mani) (adv) while/duringすっかりすっかり(sukkari) (adv,adv-to) all/completely/thoroughly定着定着(teichaku) (n,vs) taking hold/getting attached/becoming established/fixing down/establishingしたした(shita) (n) did/a past form of the previous verb/tongue/tongue-like object/clapper/talon。。(。) Japanese period "."
