noun, noun which may take the genitive case particle 'no', adverb
more or less; roughly; pretty much; technically
Expresses that something is done or true to a certain extent, though not perfectly or completely. Often used to soften a statement or acknowledge a partial truth.
一応、宿題は終わったけど、まだ見直しが必要だ。
I've more or less finished my homework, but I still need to review it.
He's technically a doctor, but he doesn't have much experience.
tentatively; for the time being
Indicates a provisional action or arrangement, often with the implication that it may change later.
For the time being, I'll set tomorrow's meeting for 10 o'clock.
just in case; to be on the safe side
Used when taking a precautionary action, even if it might not be necessary.
It might rain, so I'll take an umbrella just in case.
Rare, mostly literary or archaic use meaning 'once' or 'one time'. In modern Japanese, 一度 (いちど) is the standard word.
In old texts, 一応 can be used to mean 'once'.
I'll bring an umbrella just in case.
It's technically finished, but there are still things to improve.
I'll ask, just to see for now.
I confirmed the reservation just to be safe.