〜込む details
read + do thoroughly, until it settles in or sinks in
yomi komu
do thoroughly, until it settles in or sinks in
meaning: read thoroughly
試験前に、単語を覚えこむ。
shiken mae ni, tango o oboe komu.
Before the exam I remember thoroughly all the vocabulary. neutral
二人はすっかり話し込んでしまって、電車を逃しちゃった。
futari wa sukkari hanashikonde shimatte, densha o nogashichatta.
The two of them got so deep into conversation that they missed the train. casual
- past
- polite
Examples
do X thoroughly — the action goes deep enough that the result settles in and stays
試験前に、単語を覚え込んだ。
shiken mae ni, tango o oboekonda.
Before the exam I remembered thoroughly all the vocabulary. neutral
二人はすっかり話し込んでしまって、電車を逃しちゃった。
futari wa sukkari hanashikonde shimatte, densha o nogashichatta.
The two of them got so deep into conversation that they missed the train. casual
契約書の細かい条件まで読み込んでから、サインしてください。
keiyakusho no komakai jouken made yomikonde kara, sain shite kudasai.
Please read even the fine print of the contract closely before signing. neutral
新入社員には、まず安全ルールを徹底的に教え込むことになっております。
shinnyuu shain ni wa, mazu anzen ruuru o tetteiteki ni oshiekomu koto ni natte orimasu.
New employees are first thoroughly drilled in the safety rules. formal
Formation
{V-masu-stem}こむattaches to ます-stem
Notes
書き込む (post/fill in), 飲み込む (swallow), 座り込む (sit-in) are all real
words, but each has drifted to its own specific idiom, not this pattern's
plain "thoroughly" reading.
Related patterns
Similar
Both intensify a masu-stem verb, but 切る marks reaching the END — exhaustive, nothing left — while 込む marks going DEEP, with no completion claim at all; 読み込む can describe an ongoing close reading, 読み切る cannot.