godan verb (-su)
begin to notice; start to realize; become aware
Describes the moment when someone starts to perceive or understand something that was previously unnoticed. Often used with ～と or ～てくる.
彼はようやく自分の間違いに分かり出した。
He finally began to notice his own mistake.
その問題の深
I'm starting to realize the seriousness of the problem.