na-adjective, adverb, noun
fading; on the verge of vanishing
Describes something that is barely there, about to disappear, or faint. Often used with なる or as an adverb.
ろうそくの火が消え消えになっている。
The candle flame is flickering and about to go out.
意識が消え消えで、話がよく聞き取れなかった。
My consciousness was fading, and I couldn't catch what was being said.