delusional
🇺🇸
/dɪˈluːʒənl/
🇬🇧
/dɪˈluːʒənl/
Having false beliefs or ideas that are not based on reality.
His delusional behavior made everyone question his sanity.
彼の妄想症状の行動は、皆が彼の神経を疑うようにさせた。