促音便 そくおんびん nasal sound change (generation of geminate consonant, primarily a geminate 't' from vowel stems ending in 'i') n ling Advanced ➥
撥音便 はつおんびん nasal sound change (generation of the mora 'n', primarily from verb stems ending in 'i') n ling Advanced ➥
便乗商法 びんじょうしょうほう piggybacking marketing; method of making sales by jumping on a bandwagon (like that of a boom, popularity, disaster, etc.) n Advanced ➥
快食快便 かいしょくかいべん good appetite and good bowel movements; enjoying one's food and having regular stools n yoji Advanced ➥