〜始める hajimeru
〜始める（hajimeru）means “to begin to ...; start ...-ing”. A compound verb attached to the masu-stem of a verb to express that an action begins. Formation: V（ます形のます）＋ 始める
to begin to ...; start ...-ing
N4Formation
V（ます形のます）＋ 始める
Explanation
A compound verb attached to the masu-stem of a verb to express that an action begins. It focuses on the moment the action starts.
Examples
あかちゃんが きゅうに なき始めた。
あかちゃんが きゅうに なきはじめた。
The baby suddenly started to cry.
らいげつから にほんごを べんきょうし始めます。
らいげつから にほんごを べんきょうしはじめます。
I'll start studying Japanese from next month.
Note
Opposite of 〜終わる (finish ...-ing). Compare 〜出す, which stresses a sudden, unexpected start.
FAQ
〜始める — what does it mean and how is it used?
to begin to ...; start ...-ing. A compound verb attached to the masu-stem of a verb to express that an action begins. It focuses on the moment the action starts.
〜始める — how do you form it?
V（ます形のます）＋ 始める
〜始める — any usage notes?
Opposite of 〜終わる (finish ...-ing). Compare 〜出す, which stresses a sudden, unexpected start.