冷え込む(P);冷えこむ(sK) [ひえこむ] /(v5m,vi) (1) to get (very) cold/to get (much) colder/(v5m,vi) (2) to feel very cold (of the body)/to be chilled to the bone/(v5m,vi) (3) to worsen (of relations, economic conditions, etc.)/to decline/(P)/EntL1556640/