taru-adjective, adverb taking the 'to' particle
hazy consciousness; half-conscious; dopey
Describes a state of clouded or dim consciousness, often due to illness, injury, exhaustion, or intoxication. Used as a たる adjective or adverbially with と.
I'm in a hazy state of consciousness due to the fever.
After the accident, he was taken to the hospital while only half conscious.
朦朧 alone means dim, hazy, or obscure, often used for vision or consciousness. 意識朦朧 specifically refers to hazy consciousness.
意識不明 means unconscious or in a coma, a more severe state than 意識朦朧, which implies partial consciousness.
Standard kanji spelling; 朦朧 is a rare kanji pair but commonly used in this yojijukugo.
Kana-mixed spelling, often used when the kanji 朦朧 is considered difficult or obscure.
Yojijukugo composed of 意識 (consciousness) and 朦朧 (dim, hazy). The exact historical derivation is uncertain, but the combination directly expresses a clouded state of awareness.