〜かけ・〜かける
half-done; start to, nearly
Verb ます-stem + かけ (の Noun) / かける
Sign up free to review this point on a spaced schedule.
かけ after a ます-stem describes something started but not finished: 食べかけのパン, "a half-eaten piece of bread"; 読みかけの本, "a half-read book". It works like a noun and takes の before another noun.
As a verb, かける means "start to, be about to": 何か言いかけて、やめた, "he started to say something, then stopped". The action gets interrupted.
With verbs of change, かける means "nearly": 死にかけた, "nearly died"; 忘れかけていた, "had almost forgotten".
Compare 始める, a plain "start". かける implies the action didn't get far, or was cut off.
Examples
テーブルの上に食べかけのパンがある。
There's a half-eaten piece of bread on the table.
読みかけの本がたくさんある。
I have lots of half-read books.
何か言いかけて、彼はやめた。
He started to say something, then stopped.
手紙を書きかけたとき、電話が鳴った。
Just as I'd started writing the letter, the phone rang.
事故で死にかけたことがある。
I once nearly died in an accident.