noun
In psychiatry, refers to the invention of words that have meaning only to the person who uses them, often seen in schizophrenia.
統合失調症の患者は、時に言語新作を示すことがある。
Patients with schizophrenia sometimes exhibit neologisms.
Compound of 言語 (language) and 新作 (new creation), likely a calque from a Western psychiatric term.