expression, noun-modifying (irregular)
incoherent; rambling; vague; wandering
Describes speech, thoughts, or writing that lacks focus or logical connection; often used for aimless talk or scattered ideas. The phrase is a fixed prenominal expression modifying nouns like 話, 考え, or 文章.
彼の話はとりとめのない内容だった。
His talk was rambling and lacked coherence.
とりとめのない考えが頭の中を巡っていた。
Vague, wandering thoughts were going around in my head.
From the verb 取り留める (to hold onto, to keep in order) in its negative form, literally meaning 'without being held together,' hence 'incoherent' or 'rambling.' The kana spelling is now standard.