noun or participle which takes 'suru', adverb, adverb taking the 'to' particle
absentminded; careless; spaced out
Describes a state of mental fog, inattention, or slowness. Often used with する or as an adverb with と.
ぼやぼやしていると、電車に乗り遅れるよ。
If you're spacing out, you'll miss the train.
彼は授業中、ぼやぼやと窓の外を見ていた。
He was staring absentmindedly out the window during class.
na-adjective, noun or participle which takes 'suru', adverb
Describes hair that is long, messy, or untidy. Often used with した or の.
朝起きたら髪がぼやぼやになっていた。
When I woke up, my hair was all disheveled.
adverb, adverb taking the 'to' particle
flaring up (fire); rising (steam)
Archaic mimetic use for something flaring up or rising, such as fire or steam. Not used in modern everyday speech.
古文では、火がぼやぼやと燃え上がる様子を表すことがある。
In classical texts, ぼやぼや can describe a fire flaring up.