expression, godan verb (-ru)
Describes physically fainting or nearly fainting, often from shock, pain, or exhaustion.
あまりの痛さに気が遠くなりそうだった。
The pain was so intense I almost fainted.
expression, godan verb (-ru)
feel dazed; feel overwhelmed
Figurative use: feeling mentally overwhelmed, spaced out, or unable to think clearly, often due to a huge task, shock, or extreme tiredness.
仕事が多すぎて気が遠くなりそうだ。
There's so much work I feel like I'm losing my mind.
その話を聞いて気が遠くなった。
I felt dazed after hearing that story.