godan verb (-su), transitive verb
forget to write; leave out by mistake; omit in writing
Used when someone accidentally fails to include something in a written text, such as a name, word, or detail.
名簿に彼の名前を書き落としてしまった。
I accidentally left his name off the list.
大事な点を
I took notes so as not to forget to write down the important points.