expression, i-adjective
endless; boundless; never-ending
Describes something that has no clear end or limit, often used for tasks, stories, or abstract things that seem to go on forever. Frequently appears in the phrase きりがない (literally 'there is no end') to mean 'it's endless' or 'there's no end to it'.
See also: 切りがない
彼の話はきりのないものだった。
His story was an endless one.
この作業はきりがない。
This task is never-ending.
The dictionary form of the same expression; きりのない is the attributive form used before nouns, while 切りがない is the predicate form meaning 'there is no end'.
From 切り (kiri, 'end', from 切る 'to cut') + が (subject marker) + ない (negative). Literally 'there is no cutting off', i.e., no end.