What it means
一応 is an adverb meaning “for the time being,” “as a precaution,” or “at least for now.” It presents an action or state as a minimum necessary measure, often with the implication that it may not be fully sufficient or final. It commonly appears before a verb or clause and is useful when describing preparation, checking, or a provisional decision.
Usage note
一応 can sound deliberately noncommittal: it may indicate that something has been done, while leaving open the possibility that further action or a better result is needed. Do not confuse it with 必ず, which expresses certainty or an obligation to do something.
How to use it
一応の準備はできています。
The preliminary preparations are complete.
一応、明日の会議の資料を印刷しておきます。
As a precaution, I will print the materials for tomorrow’s meeting.
一応の準備はできている。
The preliminary preparations are complete.
一応、明日の会議の資料を印刷しておく。
As a precaution, I will print the materials for tomorrow’s meeting.