例文（１級）：derangement，latent

The derangement in his mind became evident when he started yelling at
random people on the street. (彼の心の乱れは明らかになり、彼が通りで無作為に人々に叫び始めたときに現れた。)

Note: Please note that the word “derangement” is used with the meaning
of “mental disturbance” in this sentence.

derangement： 精神錯乱、乱れ
latent： 潜在的な