断言 and 言い切る difference


I was wondering what is the difference between 「言い切る」 and 「断言」? To me they
mean the same thing: "declare, assert".

Thanks!




When 言い切る and 断言する mean "to say something definitively", they are very similar
and safely interchangeable. The two words are used both in formal essays and
casual conversations, but as a Sino-Japanese word, maybe the latter tends to
be preferred in formal sentences.

言い切る has another meaning, "to say something until the end," "to clearly finish
the sentence."




When 言い切る and 断言する mean "to say something definitively", they are very similar
and safely interchangeable. The two words are used both in formal essays and
casual conversations, but as a Sino-Japanese word, maybe the latter tends to
be preferred in formal sentences.

言い切る has another meaning, "to say something until the end," "to clearly finish
the sentence."

