Fetching details from the dictionary...

more or less; though not quite satisfactorily; after a fashion; pretty much; roughly; so far as it goes; technically
tentatively; for the time being
just in case
once
一往の確認はしたが完璧ではないかもしれない。
I did a rough check, but it may not be perfect.
一往準備は整っているが不安は残る。
Preparations are more or less in order, but some concerns remain.
報告書は一往完成したので提出します。
The report is more or less finished, so I'll submit it.